Return to 2000: Captain of the Great Powers
Chapter 111 God Said... Let There Be Light!
Chapter 111 God Said Let There Be Light! (Please subscribe!)
In the cockpit of Blue Sky Airlines Flight 9811, Xu Cang silently put down his earphones. He seemed to relax after sending messages blindly just now.
"Shuyue, do you remember what I told you just now?" Xu Cang kept opening and closing the five fingers of his left hand, revealing his extremely anxious heart.
It is true that, in theory, it is possible to mentally calculate a flight path when the airspeed and heading can be obtained.The only fortunate thing is that before that, he learned that the wind speed in Jianchuan is very small, which is a rare state of almost calm wind, which invisibly relieved Xu Cang's calculation burden.
But in reality, this is still close to impossible.Those people in the dispatching room are not experienced bosses, how could they not understand Xu Cang's plan?
However, being able to understand does not mean that they can agree, and Xu Cang's current situation is worse than what they know.He could only vaguely hear Xia Shuyue's voice now, and he would be completely deaf within a predictable time, and he had to make a final confession before then.
Not to mention the amount of mental calculations that Xu Cang did, one of the most important problems is that even an extremely small error, after the accumulation of time, will be gradually magnified in the end, so that Xu Cang Usher in an irreversible ending.
But, unfortunately, the accumulation of such errors is inevitable, and Xu Cang has a clear understanding of this.If he's all right, he's confident that he'll get the airspeed right, even in windy conditions, and that he'll always be right on the bank of the turn and on the heading.However, in the extreme situation where the eyes cannot see and the ears cannot hear, it is impossible to maintain the accuracy continuously only by relying on one's own feeling.
Therefore, when there is only a little bit of sound that can be heard, Xu Cang should eliminate the accumulation of errors as much as possible, that is, determine the correction point!
"I remember it!" Xia Shuyue nodded emphatically. She knew that what Xu Cang told her was important, and she didn't relax at all: "Slap your shoulder if the speed change exceeds two knots. , if it is too small, take two shots in a row. When the plane turns to be parallel to the runway, if the heading is greater than 051, take a shot of the arm, and if the heading is less than 051, take two shots in a row."
"En." Xu Cang nodded lightly.Xia Shuyue has not received special training, and her attention cannot be allocated. If she can be assigned too many reminder tasks, it is very likely that she will be confused and give Xu Cang wrong information.Therefore, Xu Cang only asked to rely on Xia Shuyue to provide reminders on a few key nodes or data, and it was only a very vague reminder.
If Xia Shuyue has Xu Cang's ability, it is because Xu Cang can accurately describe all subsequent errors after mutual agreement.Unfortunately, Xia Shuyue does not have this ability,
In fact, Xu Cang felt regretful about one thing.That is, before he lost his eyesight, he did not print out the distance circle and the five-sided extension line of the airport, but only one airport positioning point.Otherwise, Xia Shuyue should be able to simply describe the precise position of the plane by relying on the distance circle, the positioning point and the extension line of the five sides.
The most terrible thing is the error of the final time, because ordinary people can't tell whether the plane is leaning to the left or to the right without relying on the instruments, just by visual inspection.
Ordinary people may think that it is impossible to tell whether the plane is left or right on the fifth side, and can't tell the difference between left and right?But in fact it is!
Not to mention the more difficult-to-distinguish altitude deviation, the relatively easy roll deviation even professional pilots need to go through a long period of training to find the knock.
Many pilots may not be able to fully see the roll deviation of the aircraft even when they turn to the left seat, so that they cannot land on the center line of the runway from time to time.
It involves the direction offset and viewing angle of the aircraft's nose, which is why ordinary people are more likely to make mistakes.Therefore, Xia Shuyue was basically unable to help in the most critical five sides, which was also what Xu Cang was most worried about.
However, Xu Cang still had to add the last insurance for himself.
"Can you see Qingfeng Building now?" Xu Cang said in a deep voice, "If I remember correctly, Qingfeng Building should be in our direction at three o'clock, you can look for it."
Qingfeng Building is a landmark building in Jianchuan City. The main structure is a triangular building with extremely high floors, which is very easy to distinguish.
Following Xu Cang's guidance, Xia Shuyue quickly found the location of Qingfeng Building: "Brother, I saw it, what's wrong?"
"According to the correct descent trajectory, the plane will fly over the Qingfeng Building during the final descent, and the altitude should be about [-] feet. As agreed before, if the altitude deviation exceeds [-] feet when flying over the Qingfeng Building, If it’s too big, just pat me on the back; if it’s too small, pat me twice in a row. If the height is just right, just put it on my back for more than three seconds.” Xu Cang explained seriously: “Shuyue, this is the most important thing. It's more important than what I told you earlier."
Compared with the airspeed, as long as the throttle and attitude are kept constant, the airspeed can basically be maintained within a relatively accurate range.However, it is difficult to express the change of altitude, and there are too many factors that can affect the descent rate. In addition, Xu Cang will use a special descent method in order to avoid the influence of terrain factors.
Theoretically speaking, he has a way to maintain a relatively stable descent rate, but due to the influence of the airflow, the descent rate will fluctuate unpredictably. Therefore, Xu Cang has to make a final altitude correction at the location of Qingfeng Building.
The location of Qingfeng Building is exactly at the five nautical miles of runway 23. According to the three-degree glide gradient, the AFE altitude when flying over Qingfeng Building should be 900 feet, plus the altitude of Jianchuan Airport itself is [-] feet. More than [-] feet, then the barometric altitude of Qingfeng Building should be [-] feet, which is the most accurate altitude.
"Understood, brother!" Xia Shuyue kept Xu Cang's explanation firmly in her heart.
"Okay, let's make the final preparations now." Xu Cang let out a long breath. In order to eliminate all uncontrollable factors, he must build the landing configuration at this moment, otherwise, the deceleration period during the configuration is very difficult to calculate. , adding trouble to himself for no reason: "Okay, report the airspeed to me."
Xia Shuyue immediately said: "Brother, the current speed is two hundred."
Xu Cang pursed his lips lightly: "When it drops to 160 knots, please pat me on the shoulder."
After finishing speaking, Xu Cang turned off all the accelerator pedals, kept the pitch attitude unchanged, and then put the flaps to the [-]th position of the landing flaps in one breath.
This is actually a violation of the operating method, because the airspeed may decrease faster than the flap release speed, which will easily cause the speed to be too small, thereby generating a QAR warning.
However, Xu Cang didn't care about the QAR warning at this time.It is impossible for him to follow the routine plan of flap flaps, which is too time-consuming. If the plane flies past the airport as the anchor point during this period, the subsequent calculations will be completely messed up.Therefore, it doesn't matter whether the flaps are in place or not, as long as the speed drops to 160 knots.
Before that, Xu Cang communicated with Xia Shuyue about the plan to release the flaps. At that time, Xu Cang clearly asked Xia Shuyue to keep reporting the speed, but now it has changed to using the flapping method to prompt the final target speed.
This is a very bad signal. Perhaps Xu Cang is deaf now, or he feels that he is on the verge of deafness, so he has to adapt in advance to the environment where he cannot hear at all.
During the deceleration process, Xia Shuyue kept staring at the airspeed indicator. Suddenly, she asked a question that she wanted to ask just now: "Brother, what if the plane didn't fly over Qingfeng Building?"
This is an extremely acute question.Xu Cang asked Xia Shuyue to remind him whether the altitude was too high or too low when flying over the Qingfeng Building, so as to make the final correction.But the premise is that the plane can fly over the Qingfeng Building accurately.What if the plane deviates from the final flight path?The plane will pass by Qingfeng Building, what should we do in such a situation?
However, Xu Cang lowered his head and did not speak as if he did not hear.
Just when Xia Shuyue thought Xu Cang could not hear at all, Xu Cang suddenly said, "Shuyue, this is a meaningless question!"
In the tower control room of Jianchuan Airport, everyone was watching a radar screen. Next to the signal point of Lantian 9811, there were constantly fine-tuning data, which were various flight data transmitted by the aircraft transponder.
"He's slowing down?" The controller couldn't help frowning: "It's slowing down so fast, it's below the clean speed. Did he lower the flaps?"
Luo Yong also felt strange: "Did you put the flaps so early?"
Even if you want to land as soon as possible, you should postpone the flaps, because once you release the flaps, you will slow down, and the most precious thing now is time, how can you waste it like this?Now the altitude approach of 9811 is only 700 meters, which is a very low altitude, with a huge deceleration space, and it is completely possible to delay the deceleration and release the flaps.
Putting the flaps so early has to delay the landing time by two to three minutes!
"Because he has to maintain his speed within a stable range before passing the anchor point of the field." Ye Xian licked his lips: "The process of decelerating and lowering the flaps will cause a huge change in speed, which will greatly affect the speed of the opponent. The calculation of the distance of the aircraft, so even if the landing is delayed, he must eliminate this hidden danger. Moreover, he seems to want to make a detour to the north for the approach."
"North?" Director Liu mused thoughtfully, "Why did he come in from the north? Very few planes come in from the north?"
Because there is an unusually prominent mountain peak on the north side of the fifth side of runway 23, its range affects the operation of most aircraft coming from the north to cut into the fifth side, so that the aircraft coming from the north have to keep pressing down and cannot descend until Cut into the five sides to start the next.
Due to the high altitude, the aircraft entering from the north cut the glideslope of the No. 23 blind landing instead of cutting from the conventional bottom, but catching up from above.This is not an ideal way to intercept the glideslope. It will cause the aircraft to drop at a very high rate during the period of catching up with the glideslope. It is easy to punish the hard warning with a high drop rate at low altitudes, and sometimes trigger terrain warnings by mistake. Therefore, Jianchuan Airport The approach method has been modified, and the aircraft is rarely commanded to enter the port from the north side.
Any pilot who has been flying at Jianchuan Airport for a while should know about this.Jianchuan Airport is the base airport of Blue Sky Airlines, and it is reasonable for the pilots of their company to know the difficulty of entering the port from the north.
Director Liu strongly doubts whether the crew of Lantian 9811 has lost his head in a hurry.Isn't it flattering to enter from the south?
Just when Director Liu was puzzled, riots broke out in the control room, and some of them pointed to the sky outside the window and shouted: "The plane is coming!"
A group of people followed the direction the man pointed and looked up, and indeed they saw a plane in the sky, and according to their eyes, the plane was already approaching the sky above the field.Comparing it with the radar screen, this plane is clearly Blue Sky 9811!
Director Liu, the controller, and Luo Yong and others around did not pay too much attention to the outside, but stared at the radar firmly. This is the most powerful reference.
"How is he going to fly?" Director Liu muttered to himself, although rationally speaking, he felt that Lantian 9811 was already doomed, but until the last moment, there were always some unrealistic fantasies.However, once the plane flies over this field, it belongs to the north, and he really wants to know what the crew is going to do.
I saw that everyone held their breath and focused on the signal points on the radar screen.When the signal point was about to fly over the field, it suddenly turned slightly to the left and turned down, flying to the 360 heading.
Luo Yong couldn't help being startled: "What is he going to do?"
"Turn ahead!" Ye Xian's eyes flickered, "He's really calculating the route!"
Since it takes time for the aircraft to form a slope and turn, this results in that the turning point is not a knuckle in the conventional sense, but a circular arc.If you want to fly strictly according to the predetermined trajectory, you must master the amount of advance. You don’t start turning when you reach the turning point, but start turning a little earlier.
From the point of view of the radar, the plane of Blue Sky 9811 started turning 1.5 nautical miles ahead of schedule.The trajectory of the signal point perfectly cuts through the home point, and then just forms a 360-degree heading when sailing.
"Is this really flown manually?" Yu Fengtian stared blankly at the trajectory of the signal point, which is so round, and from entering to passing point to leaving the voyage, the accuracy is not bad.
Luo Yong bared his teeth: "Is it the same as flying out of a computer? This is not manual flying, but blind flying!"
Although Yu Fengtian is in the maintenance and support department, he also knows some flying knowledge. He looked at the flight path of 9811 and felt more and more incredible: "Could it be that guy Xu Cang deliberately made the problem worse? In fact, his eyesight and Hearing doesn't really matter much?"
Ye Xian looked at Yu Fengtian with some contempt: "What is he doing this for?"
"Exaggerate the problem, if he is lucky enough to land later, wouldn't it appear that he has done a lot of credit?" Yu Fengtian speculated on the possibility of Xu Cang's fraud with the greatest malice, and he pushed Luo Yong next to him: "Do you think so?" Is this possible? When you blindly sent the message just now, when you think back to the tone, where was the slightest panic? If it is true that you can’t see, you can’t hear, you can’t use the instrument, then everyone will be afraid and nervous! Did he have those emotions in his tone?"
Luo Yong looked at Yu Fengtian like an idiot, maybe out of his instinct to protect himself, or maybe just looking for a psychological comfort, Yu Fengtian started talking nonsense.
Whether Xu Cang is pretending or not, you will know when you get off the plane and go to the hospital for a check, it's the idiot who plays tricks on this kind of thing!
Just as Yu Fengtian was talking nonsense, the controller suddenly smacked his lips: "Director, why does the trajectory of the plane 9811 look familiar?"
Ye Xian raised his eyebrows: "Has your airport passed the No. 23 approach procedure above this field?"
"Yes, there is, that is, the planes coming in from the north will fly over the field first, then join the third right side, and finally land on runway 23." Director Liu thought for a moment: "But this is not right, he is going north Fly, that program is flying south, is it possible that he wants to make a U-turn in the air?"
"Probably not!" Ye Xian thought for a moment: "He was able to fly directly to this field just now because the extension line from the initial approach direction just passed through this field. However, if he turned around on the spot, he might not be able to fly back to this field." He is on the field, and he needs an accurate positioning point without the slightest error. Therefore, any turns exceeding ninety degrees should be avoided as much as possible.”
Due to the huge speed of the aircraft, its turn in place will draw a huge circle, and the pilot cannot guarantee that it will return to the starting point after turning a circle.Regardless of the influence of the wind, as long as the slope changes slightly, there will be a difference between the starting point and the final point.
Xu Cang is not a god, he can keep the slope unchanged even when he is invisible.
This made Director Liu confused: "Then what do you mean, there is no approach procedure for No. 23 in the north?"
"Director, didn't we have an approach procedure for SXS-2Y before? It crossed the sky from the south, and the departure trajectory was heading 360." The controller suddenly said.
"But, isn't this program obsolete?" Luo Yong knew some inside information: "It is reasonable, this program should have been obsolete for some years. Xu Cang didn't use it before he joined the company. He probably didn't know about it."
Director Liu nodded: "That's right! However, apart from the troublesome need to intercept the glideslide from a high place at the end of that procedure, the rest is not a problem."
As mentioned before, this SXS-2Y program is the backup program of SXS-1Y, which is rarely used in normal times.In addition, the four sides of this procedure happen to be on the hilltop on the north side, so as long as you enter the field from this procedure, you must intercept the glideslope from a high place, causing the pilots to suffer and complain at every turn.
It is precisely because of the continuous complaints from the pilots and the frequent occurrence of terrain warnings caused by large descent rates that the bureau requested to modify the SXS-2Y procedure to eliminate approach risks.
However, if you want to modify an approach procedure, you need to hand it over to Boeing or the Flying Research Institute. The money for changing the procedure alone is a lot of money, not to mention that it will take a period of time to verify after the modification is completed.Once there is a problem, just call back and try again.
As the cash-strapped Jianchuan Airport cannot solve the money problem, then eliminate the problem itself.So, I deleted SXS-2Y directly. Anyway, this program is only a backup of SXS-1Y, and it is rarely used at ordinary times, so it doesn’t hurt to delete it.
Even if there is too much incoming traffic, just let the controller take care of manual guidance.Controllers get paid according to time, not according to the number of flights commanded, so the airport does not need to increase labor costs, which is perfect.
"The current state of the crew is to intercept the glideslope from a high place?" Director Liu was a little puzzled: "Aren't you asking for trouble for yourself?"
"No!" Ye Xian shook his head: "He has established the landing pattern so much in advance, and it will be easier to catch up with the correct trajectory when he reaches the fifth side. What kind of low-altitude descent rate warning. I’m actually curious how he controls the descent? The pilot can sense the plane’s slope, attitude and even the throttle through somatosensory perception, but the rate of descent is difficult to control, and the difference in rate of descent within [-] is basically undetectable Yes, then how did he control the plane on a three-degree glide trajectory, relying on the flight attendant who helped him to calculate the altitude ratio for him?"
If a professional pilot cooperates with Xu Cang, he can calculate the appropriate descent rate for Xu Cang through the height-to-distance ratio table on the approach map of runway 23, but Xia Shuyue obviously does not have this ability.
Of course, even if it can be calculated, how to accurately and timely convey it to Xu Cang who can't see or hear is still a very troublesome problem.
However, just guessing here won't help. Director Liu immediately patted the controller on the shoulder: "Switch the software number to the last two versions."
In the new version, the program SXS-2Y cannot be displayed on the radar screen, and it needs to be switched to the old version.The controller immediately operated, and quickly switched the version of the command software.
Fortunately, there are basically no major changes between versions, otherwise it will take a lot of time to switch versions.
After cutting the software version, the controller made another input, and soon the reference path of SXS-2Y appeared on the radar screen.
Just listening to the sound of inhalation one after another, the signal point of 9811 is highly coincident with the path of SXS-2Y.Director Liu's eyes almost popped out: "He is really flying along SXS-2Y, how would he know? Even if he knew, there should be no SXS- 2Y content, right?"
Shocked, Director Liu gradually looked at Luo Yong, wanting to get an answer.Luo Yong was a little embarrassed. To be honest, he didn't know what was going on.This makes him very useless, a dignified executive vice president can't figure out what a second officer is thinking.
"It is true that there is no SXS-2Y program in our company's database, and even the relevant content in the atlas has been removed." Luo Yong frowned: "I don't know how he knew about it."
"Wait a little longer!" Ye Xian's eyes sparkled, "See if he can turn at the predetermined turning point."
The SXS-2Y program will turn right after flying about ten nautical miles over the field, and Ye Xian wants to see if Xu Cang can follow the right turn.
Everyone held their breath almost unconsciously, the distance of ten nautical miles is very short even for a plane that has completed the landing configuration.Soon, when he was about to enter the turning point, Xu Cang started turning 1.9 nautical miles ahead of schedule, just keeping up with the planned arc-shaped turning trajectory.
"What a beautiful lead!" Even Ye Xian had to admit that Xu Cang was perfect in grasping the turn lead.
The previous turn in the sky above this field had a relatively small turning angle, so Xu Cang's lead was also relatively small, but this time he made a lot of turning angles, and the lead was increased accordingly.
This amount of advance micro-management alone is enough for many pilots to learn for a lifetime.
After Lantian 9811 turned following the predetermined trajectory, it can be confirmed that Xu Cang is really flying along the abandoned program of SXS-2Y.Although I don't understand why Xu Cang knows about this program and has such a good understanding of its data, so far, everything is going well.
"It's not like flying blindly." The well-informed Director Liu couldn't help but exclaim: "Can people really count so accurately?"
"It's hard! But it's not impossible!" Ye Xian also became more excited, it was the excitement of finding an opponent.
By this time, Director Liu could see things clearly.Compared with Luo Yong, the vice president of operations, although Ye Xian looked young, he seemed to have extraordinary knowledge, even though he didn't know Ye Xian.
So, out of instinct, Director Liu was still willing to ask Ye Xian for his opinion: "Then do you think he can bring the plane down?"
It can be seen that the trajectory calculated by Xu Cang's mind highly overlaps with the actual program trajectory, which made Director Liu rekindle the fire of hope.It's just that Director Liu gave up on Luo Yong and asked Ye Xian for advice, which made Luo Yong really uncomfortable.
Ye Xian shrugged: "Xu Cang, I've heard of it. If the previous news about him is not exaggerated, there is probably a [-]% chance of success."
At this moment, Director Liu was just about to drink some water to moisten his throat. When he heard that there was only a half chance, his hand shook and almost spilled all the water: "Half chance, 5.00%, so low?"
"Then what do you think? If it's an ordinary pilot, he's going to die. It's pretty good if he has a [-]% success rate." Ye Xian put up a finger: "Just now you also mentioned the PBN technology. In this technique, the navigation accuracy in the approach phase is three times that of the route, and the accuracy in the final descent phase is three times that of the approach phase. Now you can see that it matches the actual trajectory very well, that is because the current The accuracy requirements are not high, and the deviation response within one nautical mile cannot be seen on the radar. Moreover, it is only at the initial stage, and the error has not accumulated yet, so the accuracy naturally seems to be very high."
"And in the final descent stage, the accuracy requirements will be doubled. You must know that the runway is only 60 meters wide, which is about 0.03 nautical miles!" Ye Xian showed a smile: "And it's not just the error control on the roll. , the final leveling is also a key issue. For a top pilot, he can completely rely on the final report of the radio altimeter to judge the sinking of the plane without looking at the outside world. But if he really can’t hear, how can he judge the sinking of the plane? Shen and the ground approach rate, how does he choose to equalize the opportunity?"
"So. I don't mean to belittle him at all." Ye Xian said firmly: "It's only half done!"
Director Liu's facial muscles, which had just relaxed, immediately tightened up again. He thought for a moment, and called to his assistant, "Have all the planes on the ground been recalled?"
"It has been notified. The ground staff reported that there are not many planes that slid out, and they will be recalled soon."
"Is there anyone else near the runway, such as a maintenance vehicle or a bird repellent?" Director Liu asked.
The assistant thought for a moment: "Now is not the time for inspection and bird repelling. There should be no relevant personnel. It's just that there is a Gulfstream business jet waiting to take off on the business apron near the end of runway 23. There should be people on it."
Director Liu's expression changed: "Tell them to evacuate quickly."
"Director, they have already closed the cabin door, and the shuttle bus has already left, so maybe it's too late to call now?"
"It's okay, you tell them that the situation is special, they are allowed to move on the apron, leave on their own, and just pay attention to avoiding them." In normal times, such orders must never be issued.
But now it's different, it's a special case.Moreover, all the planes outside are about to be recalled, so there is no concern about the possibility of colliding with the planes.
"This" assistant obviously still disagrees with Director Liu's order.
Seeing the assistant's doubts, Director Liu waved his hand: "Just do as I say!"
The assistant nodded, his face a little dignified. As a result, apart from the terminal building and the planes on the bridge, there was no living thing in the entire Jianchuan Airport.Director Liu is already planning for the worst outcome.
In the cockpit of the Gulfstream business jet on the business apron, the voice of clearance control is resounding at this moment: "N254DC, you can get off the plane by yourself and return to the terminal building from the apron. If you can, put on a reflective vest."
The two pilots in the cockpit were dumbfounded, this was the first time they heard such an instruction in their life.The captain confirmed it incredulously: "Let's go, you mean let us run from the apron to the terminal building?"
"Yes, this is a special authorization, just pay attention to avoiding on the way." Clearance control confirmed: "Please evacuate as soon as possible, the area around runway 23 is not safe."
Now that the controller has confirmed it, there is no need to worry.The captain took off his earphones and was about to pack up his things and leave.
However, Qin Xin asked from behind: "Just now you asked your friend, how did he reply?"
"He texted me back." The captain pulled out the earphones: "There is no one named Xu Cang on the blue sky 9811 crew. However, there is one in the extra crew."
Qin Xin's expression changed suddenly: "You mean Xu Cang is on the plane?"
The captain nodded blankly: "Yes, is he joining the crew?"
When the captain was packing up his things, Qin Xin's face became even paler.When Xu Cang blindly sent the message just now, she felt that the voice was very similar to Xu Cang's. After confirming this, it was indeed so.
If the pilot in the sky who couldn't see, hear, and couldn't use the navigation instruments was Xu Cang, Qin Xin felt anxious, and she asked suddenly: "The pilot on the radio just now, do you think he can fall? I am Say, judge from your professional perspective."
The captain couldn't help but stop what he was doing, and looked at Qin Xin with a little surprise.My boss seems to be very concerned about that person in the sky. If I just feel curious, is it necessary to be so serious?
However, even though he was surprised by Qin Xin's attitude, the captain still replied sternly: "He is dead. Although I don't want to say that, but that's what I think. No matter what! The airport should think so too , so the area near the runway must be cleared to prevent harm to others."
This question hardly needs to be thought about. To be honest, even if you are not an insider, you can figure out a question just by intuition. It is rare for Qin Xin to ask it so solemnly.
However, Qin Xin's pretty face turned pale when these words fell into Qin Xin's ears. She asked in a daze, "Then the airport just turned the runway lights to the brightest."
"Maybe it's because he thinks he might not be able to see anything at all, and you want to give him a guide?" The captain guessed, and then asked cautiously: "Boss, let's go down then?"
However, as soon as the captain finished his questioning, Qin Xin yelled violently: "No!"
"Huh?" The captain really didn't expect that Qin Xin didn't want to leave, so he glanced at the secretary behind Qin Xin in confusion.
Although Qin Xin was his boss, he didn't usually communicate with him. Instead, it was Qin Xin's secretary who communicated with him.
The secretary just wanted to persuade Qin Xin, but Qin Xin raised her hand to stop her.Qin Xin suddenly raised her head and looked directly at the captain: "I want you to do something!"
In the cockpit of 9811, Xia Shuyue stared at the airspeed indicator and heading indicator excitedly.Although she first heard Xu Cang describe the possibility of blind flight, she thought it was impossible from the bottom of her heart, but when she really flew, Xu Cang seemed to be able to see it, and the airspeed was stuck at 160 knots and did not move. , while the heading is maintained at 051, with a deviation of no more than one degree.
When Xu Cang was turning, he relied on his physical senses to keep the slope at [-] degrees, and then counted the time in his mind to complete the turning.It can only be said that whether it is the formation of the slope or the timing, if any of them has a large deviation, the aircraft trajectory will greatly deviate from the actual program trajectory.
In terms of mental arithmetic ability alone, Xu Cang is as terrifying as a humanoid computer.
That is to say, Xia Shuyue couldn't see the actual flight trajectory. If she knew that Xu Cang's blind flight trajectory was exactly the same as the program trajectory, she would be even more surprised.
"Brother, just fly like this, the data is not bad at all." Xia Shuyue said excitedly.
Not long ago, Xu Cang couldn't talk to her anymore, and he probably couldn't hear her at all, so naturally he couldn't hear what she said.However, Xia Shuyue didn't care, the dawn of hope came amidst despair, and that excitement had to be vented.
After flying for a while, Xu Cang turned [-] degrees to the right again, that is, turned to the four sides.Xia Shuyue looked down, and there was a mountain not far below the plane. The distance was so close that Xia Shuyue could even clearly see the trees and rocks on the top of the mountain.
But when this turn fell into the eyes of Director Liu, who was always paying attention to the radar, they were shocked.
"He turned ahead?" Director Liu really didn't understand Xu Cang's brain circuit: "Didn't he want to fly along SXS-2Y? Why did he turn around early?"
According to the procedure, the plane should have to fly another six nautical miles before turning into the four sides.Xu Cang's turning timing was obviously advanced, and much earlier.
However, Xu Cang has not lowered the altitude, and there is no problem with the terrain.Once it turns to the fifth side, it will be a flat river, and there will be no terrain obstacles.
However, what does this early turn mean?A group of people here are all led by the nose by Xu Cang, so they can't figure out his intention at all?
Luo Yong didn't know what Xu Cang's intention was, but Ye Xian seemed to have tasted it, and said to himself uncertainly: "Could it be related to his way of descending?"
"If you make a turn ahead of time, it's definitely not because you're worried about being too high, or because you're afraid of being too low?" Ye Xian clicked his lips, trying to figure out Xu Cang's thoughts.
Director Liu was a little confused: "Didn't it mean that this procedure is easy to cause the height to be too high? Even if the shape is established in advance, there is no need to worry about the height being too low, right?"
"Then what if his way of descending for a while is not normal?" Ye Xian had a flash of inspiration: "For example, slowing down the accelerator?"
Director Liu was stunned: "Is the gas pedal turned off?"
"That's right, that's right, it must be!" Ye Xian became excited, feeling excited to guess Xu Cang's thoughts: "Even under the conditions of fixed speed and configuration, different throttles correspond to different descent rates. It is impossible for us to memorize every correspondence, so choose the one we know, which is the rate of descent at idle thrust! The condition for idle thrust yields [-] in the case of landing configuration and final approach speed Descent rates from [-] feet to [-] feet."
As Ye Xian spoke, he suddenly frowned: "However, the rate of descent still fluctuates, and how does he know to verify that he is back on the right track, when can he return to the baseline throttle?"
Ye Xian acted like a madman, constantly deducing Xu Cang's intentions: "Unless, unless he has a verification point to verify his downward trajectory. But where is this verification point? If the helper can understand the approach The map is used as a reference for the descent trajectory, and he shouldn't use the extreme method of slow car descent?"
Just when Ye Xian was trying to understand Xu Cang's thoughts as if obsessed, Xu Cang, who had turned perfectly to the fifth side again, did a mental calculation to align the runway, and as expected, he turned off all four throttle levers.
With the throttle fully at slow speed, the aircraft begins to gradually form a descent rate. As Ye Xian said, the descent rate is floating upwards at [-] feet.However, this value has been unstable, which is out of Xu Cang's control.Because of this, Ye Xian didn't understand how Xu Cang made the final correction under the unstable descent rate, and where is the correction verification point?
Suddenly, Xia Shuyue yelled: "Brother, I saw the runway, and the Qingfeng Building is right in front."
Even though she knew Xu Cang couldn't hear her, Xia Shuyue couldn't hide her excitement.From her eyes, it seemed the plane was still on the right track.
In fact, although Xu Cang could not see, he was not completely blind.In his field of vision, his eyes were almost completely covered by dark red, so naturally he couldn't distinguish things.
But after turning to the five sides, Wei Wei seems to see a little halo, which is very vague.However, it is also a rough guide.According to Xu Cang's guess, this halo is probably the runway lights.It's just that this halo is too blurry, it's okay in the distance, but it's just blurred when it's close up, and it can't be used as a guide at all.
However, let's talk about the near things later, let's do the front things well first.What happens next is left to God's will!
At this time, in the Gulfstream business jet, the captain let out an extremely shocked cry: "Boss, what do you mean, let me enter the runway, what are you doing on the runway, there is a plane about to land soon."
Through the windshield, he was even able to visually observe a behemoth on the verge, and entering the runway at this time, isn't it a runway incursion?
"No, no!" The captain shook his head like a rattle: "Boss, as long as I drive the plane in, my license will probably be revoked. What will I eat for the rest of my life?"
Qin Xin's expression was incomparably cold: "If you don't go in now, I will make you unable to eat the meal of flying, believe it or not? If you listen to me, even if the Civil Aviation Administration revokes your license, I will be in the group You find a job that is more leisurely than now, and the salary is higher than now, and I will give you a position, this is my promise!"
The captain's face became gloomy, Qin Xin's words were not just words.Spring and Summer Tourism maintains good business relationships with major airline companies. If Qin Xin speaks up, the airline companies will still give some face.And most of the wealthy people who can use business jets have some personal relationships, and business jet jobs are hard to find, so it's normal for Qin Xin to let him find other jobs.
As a result, the business jet cannot fly, and it is impossible to return to Department 121. It is really blocked!
The secretary hurriedly persuaded: "Miss, this is too dangerous!"
"Shut up!" Qin Xin resolutely shouted, she looked around, it was already too late, the plane would land if it was too late, then everything would be too late.So, he said sharply, "Make a decision!"
The co-pilot's face turned pale!I don't know why things have developed into the current situation.
"Okay!" The captain seemed to have made a huge determination, and said directly to the co-pilot: "Start the engine!"
Unlike large passenger jets, the engines of business jets start quickly, and only one engine is enough to taxi, and there is no need for two engines to be good.
The co-pilot was already stunned: "Captain, are we really going in?"
"Then what can we do?" The captain was ready to revoke his license at this moment, seeing that the co-pilot was frightened, so he decided to come by himself.At the same time, he asked Qin Xin: "Boss, what do you want me to do after I enter the runway?"
Qin Xin let out a long breath, and pointed to the five sides: "Facing the nose there, turn on all the lights!"
At the same time, the plane was at exactly [-] feet after flying over the Qingfeng Building without error.Xia Shuyue, who was overjoyed, patted her palm on Xu Cang's back according to the previous agreement.
Such an action was quickly received by Xu Cang, and he couldn't help being excited.This shows that it was correct to follow the halo before, it should indeed be the runway lights, and the height is not too different, which is an excellent sign.
Now that the altitude is okay, Xu Cang pushed all the throttle sticks to the reference throttle for approach.The stroke of the throttle lever is already deeply in Xu Cang's genes, he doesn't even need to look at the instrument, he knows how much thrust there will be as soon as he pushes the throttle up.
Depending on the altitude of the airport, there will be different reference speeds. As long as the reference speed is maintained, the descent rate of the aircraft will remain relatively stable and correct.
According to the previous agreement, after passing the Qingfeng Building, Xia Shuyue hurriedly sent a simple signal to the purser to make a collision prevention broadcast.
In the next minute or so, it will be the moment of life and death!
There is no major problem with the altitude or the glide trajectory for the time being, but the problem with the roll appears.Xu Cang can guarantee that the steering wheel is always level, but even if there is little wind in this field, it is not without. As long as there is a little side wind, the plane will be blown parallel to the correct course. This process is Xu Cang. What he cannot perceive is also the most powerless part of him.
Previously, relying on the halo of runway lights, he roughly kept the final course correct.But at a low altitude, the halo of light is all blurred, unable to guide at all.
At low altitudes, a slight deviation is fatal. The 60-meter runway width is not for people to squander at will, and there is almost no room for error.
But the problem is, he has no new guidance!As long as you give him a guide, even for a moment!
If it goes on like this, it really depends on God's will whether he can live or not!
It was at this extremely urgent juncture that a ground controller in the tower control room suddenly noticed that the signal of the Gulfstream N254DC, which was clearly parked on the business apron, suddenly turned on, and then went out quickly.
The ground controller was stunned for a moment, thinking that the crew had mishandled the transponder, and didn't take it to heart at first.However, soon he always felt uneasy, so he picked up the binoculars at hand and stood up, looking at the head of runway 23.
It's just this glance that made his back break out in cold sweat. He put down the binoculars, pointed in the direction of the head of runway 23, and shouted at Director Liu: "Director, Director! A plane has entered the runway!"
Xia Shuyue, who was sitting on the right seat, had her heart pounding in her throat at the moment. As the altitude got lower and lower, she could already clearly see the signs on the runway.But she always felt that the plane was a little left, but she was not sure, and she didn't know what to do.
Just when Xia Shuyue was hesitating and struggling, the figure that appeared from the connecting road at the entrance of the runway was reflected in Xia Shuyue's eyes, and the pupils locked instantly.
"One hundred feet!" Xu Cang silently calculated the altitude of the plane. If the rate of descent did not fluctuate so much, he should be over the runway soon.
However, an ever-existing fear lingers in Xu Cang's heart. Is the plane on the five-sided extension line?
At this moment, a spot of light lit up without warning in the originally vast halo, and was quickly assimilated by the halo, as if the spot of light was like an illusion.
However, as if guided by the gods, Xu Cang pressed the plate to the right, and followed the light spot at the last moment.He didn't know what that light spot represented, but everything was so logical that he almost didn't think about it, so he turned the plane to that place.
Almost at the moment when the slope formed, Xu Cang suddenly felt a lift, as if a giant hand gently supported the plane.
It was at this quarter of an instant that the plane seemed to stop sinking and began to float around Xu Cang.It was this sign, Xu Cang knew that the plane had reached the moment of leveling out, without any hesitation, he turned off the throttle, and then gently began to increase the attitude.
In about a second or two, when the plane was in the grounding attitude, the wheelbarrow hit the runway hard. Even with the shoulder straps fixed on it, Xu Cang's body couldn't help jumping for a moment.
However, Xu Cang almost screamed out.The moment the plane touched down, he knew it was on the runway!
They survived!
No, I'm so stupid, I'm too tired!
The plane has landed, and I will have a day off tomorrow. These days, it’s almost every day, and I can’t stand it anymore!Get lazy on the last day of August.
Tomorrow is the last day, let's vote with the monthly tickets in hand!
(End of this chapter)
In the cockpit of Blue Sky Airlines Flight 9811, Xu Cang silently put down his earphones. He seemed to relax after sending messages blindly just now.
"Shuyue, do you remember what I told you just now?" Xu Cang kept opening and closing the five fingers of his left hand, revealing his extremely anxious heart.
It is true that, in theory, it is possible to mentally calculate a flight path when the airspeed and heading can be obtained.The only fortunate thing is that before that, he learned that the wind speed in Jianchuan is very small, which is a rare state of almost calm wind, which invisibly relieved Xu Cang's calculation burden.
But in reality, this is still close to impossible.Those people in the dispatching room are not experienced bosses, how could they not understand Xu Cang's plan?
However, being able to understand does not mean that they can agree, and Xu Cang's current situation is worse than what they know.He could only vaguely hear Xia Shuyue's voice now, and he would be completely deaf within a predictable time, and he had to make a final confession before then.
Not to mention the amount of mental calculations that Xu Cang did, one of the most important problems is that even an extremely small error, after the accumulation of time, will be gradually magnified in the end, so that Xu Cang Usher in an irreversible ending.
But, unfortunately, the accumulation of such errors is inevitable, and Xu Cang has a clear understanding of this.If he's all right, he's confident that he'll get the airspeed right, even in windy conditions, and that he'll always be right on the bank of the turn and on the heading.However, in the extreme situation where the eyes cannot see and the ears cannot hear, it is impossible to maintain the accuracy continuously only by relying on one's own feeling.
Therefore, when there is only a little bit of sound that can be heard, Xu Cang should eliminate the accumulation of errors as much as possible, that is, determine the correction point!
"I remember it!" Xia Shuyue nodded emphatically. She knew that what Xu Cang told her was important, and she didn't relax at all: "Slap your shoulder if the speed change exceeds two knots. , if it is too small, take two shots in a row. When the plane turns to be parallel to the runway, if the heading is greater than 051, take a shot of the arm, and if the heading is less than 051, take two shots in a row."
"En." Xu Cang nodded lightly.Xia Shuyue has not received special training, and her attention cannot be allocated. If she can be assigned too many reminder tasks, it is very likely that she will be confused and give Xu Cang wrong information.Therefore, Xu Cang only asked to rely on Xia Shuyue to provide reminders on a few key nodes or data, and it was only a very vague reminder.
If Xia Shuyue has Xu Cang's ability, it is because Xu Cang can accurately describe all subsequent errors after mutual agreement.Unfortunately, Xia Shuyue does not have this ability,
In fact, Xu Cang felt regretful about one thing.That is, before he lost his eyesight, he did not print out the distance circle and the five-sided extension line of the airport, but only one airport positioning point.Otherwise, Xia Shuyue should be able to simply describe the precise position of the plane by relying on the distance circle, the positioning point and the extension line of the five sides.
The most terrible thing is the error of the final time, because ordinary people can't tell whether the plane is leaning to the left or to the right without relying on the instruments, just by visual inspection.
Ordinary people may think that it is impossible to tell whether the plane is left or right on the fifth side, and can't tell the difference between left and right?But in fact it is!
Not to mention the more difficult-to-distinguish altitude deviation, the relatively easy roll deviation even professional pilots need to go through a long period of training to find the knock.
Many pilots may not be able to fully see the roll deviation of the aircraft even when they turn to the left seat, so that they cannot land on the center line of the runway from time to time.
It involves the direction offset and viewing angle of the aircraft's nose, which is why ordinary people are more likely to make mistakes.Therefore, Xia Shuyue was basically unable to help in the most critical five sides, which was also what Xu Cang was most worried about.
However, Xu Cang still had to add the last insurance for himself.
"Can you see Qingfeng Building now?" Xu Cang said in a deep voice, "If I remember correctly, Qingfeng Building should be in our direction at three o'clock, you can look for it."
Qingfeng Building is a landmark building in Jianchuan City. The main structure is a triangular building with extremely high floors, which is very easy to distinguish.
Following Xu Cang's guidance, Xia Shuyue quickly found the location of Qingfeng Building: "Brother, I saw it, what's wrong?"
"According to the correct descent trajectory, the plane will fly over the Qingfeng Building during the final descent, and the altitude should be about [-] feet. As agreed before, if the altitude deviation exceeds [-] feet when flying over the Qingfeng Building, If it’s too big, just pat me on the back; if it’s too small, pat me twice in a row. If the height is just right, just put it on my back for more than three seconds.” Xu Cang explained seriously: “Shuyue, this is the most important thing. It's more important than what I told you earlier."
Compared with the airspeed, as long as the throttle and attitude are kept constant, the airspeed can basically be maintained within a relatively accurate range.However, it is difficult to express the change of altitude, and there are too many factors that can affect the descent rate. In addition, Xu Cang will use a special descent method in order to avoid the influence of terrain factors.
Theoretically speaking, he has a way to maintain a relatively stable descent rate, but due to the influence of the airflow, the descent rate will fluctuate unpredictably. Therefore, Xu Cang has to make a final altitude correction at the location of Qingfeng Building.
The location of Qingfeng Building is exactly at the five nautical miles of runway 23. According to the three-degree glide gradient, the AFE altitude when flying over Qingfeng Building should be 900 feet, plus the altitude of Jianchuan Airport itself is [-] feet. More than [-] feet, then the barometric altitude of Qingfeng Building should be [-] feet, which is the most accurate altitude.
"Understood, brother!" Xia Shuyue kept Xu Cang's explanation firmly in her heart.
"Okay, let's make the final preparations now." Xu Cang let out a long breath. In order to eliminate all uncontrollable factors, he must build the landing configuration at this moment, otherwise, the deceleration period during the configuration is very difficult to calculate. , adding trouble to himself for no reason: "Okay, report the airspeed to me."
Xia Shuyue immediately said: "Brother, the current speed is two hundred."
Xu Cang pursed his lips lightly: "When it drops to 160 knots, please pat me on the shoulder."
After finishing speaking, Xu Cang turned off all the accelerator pedals, kept the pitch attitude unchanged, and then put the flaps to the [-]th position of the landing flaps in one breath.
This is actually a violation of the operating method, because the airspeed may decrease faster than the flap release speed, which will easily cause the speed to be too small, thereby generating a QAR warning.
However, Xu Cang didn't care about the QAR warning at this time.It is impossible for him to follow the routine plan of flap flaps, which is too time-consuming. If the plane flies past the airport as the anchor point during this period, the subsequent calculations will be completely messed up.Therefore, it doesn't matter whether the flaps are in place or not, as long as the speed drops to 160 knots.
Before that, Xu Cang communicated with Xia Shuyue about the plan to release the flaps. At that time, Xu Cang clearly asked Xia Shuyue to keep reporting the speed, but now it has changed to using the flapping method to prompt the final target speed.
This is a very bad signal. Perhaps Xu Cang is deaf now, or he feels that he is on the verge of deafness, so he has to adapt in advance to the environment where he cannot hear at all.
During the deceleration process, Xia Shuyue kept staring at the airspeed indicator. Suddenly, she asked a question that she wanted to ask just now: "Brother, what if the plane didn't fly over Qingfeng Building?"
This is an extremely acute question.Xu Cang asked Xia Shuyue to remind him whether the altitude was too high or too low when flying over the Qingfeng Building, so as to make the final correction.But the premise is that the plane can fly over the Qingfeng Building accurately.What if the plane deviates from the final flight path?The plane will pass by Qingfeng Building, what should we do in such a situation?
However, Xu Cang lowered his head and did not speak as if he did not hear.
Just when Xia Shuyue thought Xu Cang could not hear at all, Xu Cang suddenly said, "Shuyue, this is a meaningless question!"
In the tower control room of Jianchuan Airport, everyone was watching a radar screen. Next to the signal point of Lantian 9811, there were constantly fine-tuning data, which were various flight data transmitted by the aircraft transponder.
"He's slowing down?" The controller couldn't help frowning: "It's slowing down so fast, it's below the clean speed. Did he lower the flaps?"
Luo Yong also felt strange: "Did you put the flaps so early?"
Even if you want to land as soon as possible, you should postpone the flaps, because once you release the flaps, you will slow down, and the most precious thing now is time, how can you waste it like this?Now the altitude approach of 9811 is only 700 meters, which is a very low altitude, with a huge deceleration space, and it is completely possible to delay the deceleration and release the flaps.
Putting the flaps so early has to delay the landing time by two to three minutes!
"Because he has to maintain his speed within a stable range before passing the anchor point of the field." Ye Xian licked his lips: "The process of decelerating and lowering the flaps will cause a huge change in speed, which will greatly affect the speed of the opponent. The calculation of the distance of the aircraft, so even if the landing is delayed, he must eliminate this hidden danger. Moreover, he seems to want to make a detour to the north for the approach."
"North?" Director Liu mused thoughtfully, "Why did he come in from the north? Very few planes come in from the north?"
Because there is an unusually prominent mountain peak on the north side of the fifth side of runway 23, its range affects the operation of most aircraft coming from the north to cut into the fifth side, so that the aircraft coming from the north have to keep pressing down and cannot descend until Cut into the five sides to start the next.
Due to the high altitude, the aircraft entering from the north cut the glideslope of the No. 23 blind landing instead of cutting from the conventional bottom, but catching up from above.This is not an ideal way to intercept the glideslope. It will cause the aircraft to drop at a very high rate during the period of catching up with the glideslope. It is easy to punish the hard warning with a high drop rate at low altitudes, and sometimes trigger terrain warnings by mistake. Therefore, Jianchuan Airport The approach method has been modified, and the aircraft is rarely commanded to enter the port from the north side.
Any pilot who has been flying at Jianchuan Airport for a while should know about this.Jianchuan Airport is the base airport of Blue Sky Airlines, and it is reasonable for the pilots of their company to know the difficulty of entering the port from the north.
Director Liu strongly doubts whether the crew of Lantian 9811 has lost his head in a hurry.Isn't it flattering to enter from the south?
Just when Director Liu was puzzled, riots broke out in the control room, and some of them pointed to the sky outside the window and shouted: "The plane is coming!"
A group of people followed the direction the man pointed and looked up, and indeed they saw a plane in the sky, and according to their eyes, the plane was already approaching the sky above the field.Comparing it with the radar screen, this plane is clearly Blue Sky 9811!
Director Liu, the controller, and Luo Yong and others around did not pay too much attention to the outside, but stared at the radar firmly. This is the most powerful reference.
"How is he going to fly?" Director Liu muttered to himself, although rationally speaking, he felt that Lantian 9811 was already doomed, but until the last moment, there were always some unrealistic fantasies.However, once the plane flies over this field, it belongs to the north, and he really wants to know what the crew is going to do.
I saw that everyone held their breath and focused on the signal points on the radar screen.When the signal point was about to fly over the field, it suddenly turned slightly to the left and turned down, flying to the 360 heading.
Luo Yong couldn't help being startled: "What is he going to do?"
"Turn ahead!" Ye Xian's eyes flickered, "He's really calculating the route!"
Since it takes time for the aircraft to form a slope and turn, this results in that the turning point is not a knuckle in the conventional sense, but a circular arc.If you want to fly strictly according to the predetermined trajectory, you must master the amount of advance. You don’t start turning when you reach the turning point, but start turning a little earlier.
From the point of view of the radar, the plane of Blue Sky 9811 started turning 1.5 nautical miles ahead of schedule.The trajectory of the signal point perfectly cuts through the home point, and then just forms a 360-degree heading when sailing.
"Is this really flown manually?" Yu Fengtian stared blankly at the trajectory of the signal point, which is so round, and from entering to passing point to leaving the voyage, the accuracy is not bad.
Luo Yong bared his teeth: "Is it the same as flying out of a computer? This is not manual flying, but blind flying!"
Although Yu Fengtian is in the maintenance and support department, he also knows some flying knowledge. He looked at the flight path of 9811 and felt more and more incredible: "Could it be that guy Xu Cang deliberately made the problem worse? In fact, his eyesight and Hearing doesn't really matter much?"
Ye Xian looked at Yu Fengtian with some contempt: "What is he doing this for?"
"Exaggerate the problem, if he is lucky enough to land later, wouldn't it appear that he has done a lot of credit?" Yu Fengtian speculated on the possibility of Xu Cang's fraud with the greatest malice, and he pushed Luo Yong next to him: "Do you think so?" Is this possible? When you blindly sent the message just now, when you think back to the tone, where was the slightest panic? If it is true that you can’t see, you can’t hear, you can’t use the instrument, then everyone will be afraid and nervous! Did he have those emotions in his tone?"
Luo Yong looked at Yu Fengtian like an idiot, maybe out of his instinct to protect himself, or maybe just looking for a psychological comfort, Yu Fengtian started talking nonsense.
Whether Xu Cang is pretending or not, you will know when you get off the plane and go to the hospital for a check, it's the idiot who plays tricks on this kind of thing!
Just as Yu Fengtian was talking nonsense, the controller suddenly smacked his lips: "Director, why does the trajectory of the plane 9811 look familiar?"
Ye Xian raised his eyebrows: "Has your airport passed the No. 23 approach procedure above this field?"
"Yes, there is, that is, the planes coming in from the north will fly over the field first, then join the third right side, and finally land on runway 23." Director Liu thought for a moment: "But this is not right, he is going north Fly, that program is flying south, is it possible that he wants to make a U-turn in the air?"
"Probably not!" Ye Xian thought for a moment: "He was able to fly directly to this field just now because the extension line from the initial approach direction just passed through this field. However, if he turned around on the spot, he might not be able to fly back to this field." He is on the field, and he needs an accurate positioning point without the slightest error. Therefore, any turns exceeding ninety degrees should be avoided as much as possible.”
Due to the huge speed of the aircraft, its turn in place will draw a huge circle, and the pilot cannot guarantee that it will return to the starting point after turning a circle.Regardless of the influence of the wind, as long as the slope changes slightly, there will be a difference between the starting point and the final point.
Xu Cang is not a god, he can keep the slope unchanged even when he is invisible.
This made Director Liu confused: "Then what do you mean, there is no approach procedure for No. 23 in the north?"
"Director, didn't we have an approach procedure for SXS-2Y before? It crossed the sky from the south, and the departure trajectory was heading 360." The controller suddenly said.
"But, isn't this program obsolete?" Luo Yong knew some inside information: "It is reasonable, this program should have been obsolete for some years. Xu Cang didn't use it before he joined the company. He probably didn't know about it."
Director Liu nodded: "That's right! However, apart from the troublesome need to intercept the glideslide from a high place at the end of that procedure, the rest is not a problem."
As mentioned before, this SXS-2Y program is the backup program of SXS-1Y, which is rarely used in normal times.In addition, the four sides of this procedure happen to be on the hilltop on the north side, so as long as you enter the field from this procedure, you must intercept the glideslope from a high place, causing the pilots to suffer and complain at every turn.
It is precisely because of the continuous complaints from the pilots and the frequent occurrence of terrain warnings caused by large descent rates that the bureau requested to modify the SXS-2Y procedure to eliminate approach risks.
However, if you want to modify an approach procedure, you need to hand it over to Boeing or the Flying Research Institute. The money for changing the procedure alone is a lot of money, not to mention that it will take a period of time to verify after the modification is completed.Once there is a problem, just call back and try again.
As the cash-strapped Jianchuan Airport cannot solve the money problem, then eliminate the problem itself.So, I deleted SXS-2Y directly. Anyway, this program is only a backup of SXS-1Y, and it is rarely used at ordinary times, so it doesn’t hurt to delete it.
Even if there is too much incoming traffic, just let the controller take care of manual guidance.Controllers get paid according to time, not according to the number of flights commanded, so the airport does not need to increase labor costs, which is perfect.
"The current state of the crew is to intercept the glideslope from a high place?" Director Liu was a little puzzled: "Aren't you asking for trouble for yourself?"
"No!" Ye Xian shook his head: "He has established the landing pattern so much in advance, and it will be easier to catch up with the correct trajectory when he reaches the fifth side. What kind of low-altitude descent rate warning. I’m actually curious how he controls the descent? The pilot can sense the plane’s slope, attitude and even the throttle through somatosensory perception, but the rate of descent is difficult to control, and the difference in rate of descent within [-] is basically undetectable Yes, then how did he control the plane on a three-degree glide trajectory, relying on the flight attendant who helped him to calculate the altitude ratio for him?"
If a professional pilot cooperates with Xu Cang, he can calculate the appropriate descent rate for Xu Cang through the height-to-distance ratio table on the approach map of runway 23, but Xia Shuyue obviously does not have this ability.
Of course, even if it can be calculated, how to accurately and timely convey it to Xu Cang who can't see or hear is still a very troublesome problem.
However, just guessing here won't help. Director Liu immediately patted the controller on the shoulder: "Switch the software number to the last two versions."
In the new version, the program SXS-2Y cannot be displayed on the radar screen, and it needs to be switched to the old version.The controller immediately operated, and quickly switched the version of the command software.
Fortunately, there are basically no major changes between versions, otherwise it will take a lot of time to switch versions.
After cutting the software version, the controller made another input, and soon the reference path of SXS-2Y appeared on the radar screen.
Just listening to the sound of inhalation one after another, the signal point of 9811 is highly coincident with the path of SXS-2Y.Director Liu's eyes almost popped out: "He is really flying along SXS-2Y, how would he know? Even if he knew, there should be no SXS- 2Y content, right?"
Shocked, Director Liu gradually looked at Luo Yong, wanting to get an answer.Luo Yong was a little embarrassed. To be honest, he didn't know what was going on.This makes him very useless, a dignified executive vice president can't figure out what a second officer is thinking.
"It is true that there is no SXS-2Y program in our company's database, and even the relevant content in the atlas has been removed." Luo Yong frowned: "I don't know how he knew about it."
"Wait a little longer!" Ye Xian's eyes sparkled, "See if he can turn at the predetermined turning point."
The SXS-2Y program will turn right after flying about ten nautical miles over the field, and Ye Xian wants to see if Xu Cang can follow the right turn.
Everyone held their breath almost unconsciously, the distance of ten nautical miles is very short even for a plane that has completed the landing configuration.Soon, when he was about to enter the turning point, Xu Cang started turning 1.9 nautical miles ahead of schedule, just keeping up with the planned arc-shaped turning trajectory.
"What a beautiful lead!" Even Ye Xian had to admit that Xu Cang was perfect in grasping the turn lead.
The previous turn in the sky above this field had a relatively small turning angle, so Xu Cang's lead was also relatively small, but this time he made a lot of turning angles, and the lead was increased accordingly.
This amount of advance micro-management alone is enough for many pilots to learn for a lifetime.
After Lantian 9811 turned following the predetermined trajectory, it can be confirmed that Xu Cang is really flying along the abandoned program of SXS-2Y.Although I don't understand why Xu Cang knows about this program and has such a good understanding of its data, so far, everything is going well.
"It's not like flying blindly." The well-informed Director Liu couldn't help but exclaim: "Can people really count so accurately?"
"It's hard! But it's not impossible!" Ye Xian also became more excited, it was the excitement of finding an opponent.
By this time, Director Liu could see things clearly.Compared with Luo Yong, the vice president of operations, although Ye Xian looked young, he seemed to have extraordinary knowledge, even though he didn't know Ye Xian.
So, out of instinct, Director Liu was still willing to ask Ye Xian for his opinion: "Then do you think he can bring the plane down?"
It can be seen that the trajectory calculated by Xu Cang's mind highly overlaps with the actual program trajectory, which made Director Liu rekindle the fire of hope.It's just that Director Liu gave up on Luo Yong and asked Ye Xian for advice, which made Luo Yong really uncomfortable.
Ye Xian shrugged: "Xu Cang, I've heard of it. If the previous news about him is not exaggerated, there is probably a [-]% chance of success."
At this moment, Director Liu was just about to drink some water to moisten his throat. When he heard that there was only a half chance, his hand shook and almost spilled all the water: "Half chance, 5.00%, so low?"
"Then what do you think? If it's an ordinary pilot, he's going to die. It's pretty good if he has a [-]% success rate." Ye Xian put up a finger: "Just now you also mentioned the PBN technology. In this technique, the navigation accuracy in the approach phase is three times that of the route, and the accuracy in the final descent phase is three times that of the approach phase. Now you can see that it matches the actual trajectory very well, that is because the current The accuracy requirements are not high, and the deviation response within one nautical mile cannot be seen on the radar. Moreover, it is only at the initial stage, and the error has not accumulated yet, so the accuracy naturally seems to be very high."
"And in the final descent stage, the accuracy requirements will be doubled. You must know that the runway is only 60 meters wide, which is about 0.03 nautical miles!" Ye Xian showed a smile: "And it's not just the error control on the roll. , the final leveling is also a key issue. For a top pilot, he can completely rely on the final report of the radio altimeter to judge the sinking of the plane without looking at the outside world. But if he really can’t hear, how can he judge the sinking of the plane? Shen and the ground approach rate, how does he choose to equalize the opportunity?"
"So. I don't mean to belittle him at all." Ye Xian said firmly: "It's only half done!"
Director Liu's facial muscles, which had just relaxed, immediately tightened up again. He thought for a moment, and called to his assistant, "Have all the planes on the ground been recalled?"
"It has been notified. The ground staff reported that there are not many planes that slid out, and they will be recalled soon."
"Is there anyone else near the runway, such as a maintenance vehicle or a bird repellent?" Director Liu asked.
The assistant thought for a moment: "Now is not the time for inspection and bird repelling. There should be no relevant personnel. It's just that there is a Gulfstream business jet waiting to take off on the business apron near the end of runway 23. There should be people on it."
Director Liu's expression changed: "Tell them to evacuate quickly."
"Director, they have already closed the cabin door, and the shuttle bus has already left, so maybe it's too late to call now?"
"It's okay, you tell them that the situation is special, they are allowed to move on the apron, leave on their own, and just pay attention to avoiding them." In normal times, such orders must never be issued.
But now it's different, it's a special case.Moreover, all the planes outside are about to be recalled, so there is no concern about the possibility of colliding with the planes.
"This" assistant obviously still disagrees with Director Liu's order.
Seeing the assistant's doubts, Director Liu waved his hand: "Just do as I say!"
The assistant nodded, his face a little dignified. As a result, apart from the terminal building and the planes on the bridge, there was no living thing in the entire Jianchuan Airport.Director Liu is already planning for the worst outcome.
In the cockpit of the Gulfstream business jet on the business apron, the voice of clearance control is resounding at this moment: "N254DC, you can get off the plane by yourself and return to the terminal building from the apron. If you can, put on a reflective vest."
The two pilots in the cockpit were dumbfounded, this was the first time they heard such an instruction in their life.The captain confirmed it incredulously: "Let's go, you mean let us run from the apron to the terminal building?"
"Yes, this is a special authorization, just pay attention to avoiding on the way." Clearance control confirmed: "Please evacuate as soon as possible, the area around runway 23 is not safe."
Now that the controller has confirmed it, there is no need to worry.The captain took off his earphones and was about to pack up his things and leave.
However, Qin Xin asked from behind: "Just now you asked your friend, how did he reply?"
"He texted me back." The captain pulled out the earphones: "There is no one named Xu Cang on the blue sky 9811 crew. However, there is one in the extra crew."
Qin Xin's expression changed suddenly: "You mean Xu Cang is on the plane?"
The captain nodded blankly: "Yes, is he joining the crew?"
When the captain was packing up his things, Qin Xin's face became even paler.When Xu Cang blindly sent the message just now, she felt that the voice was very similar to Xu Cang's. After confirming this, it was indeed so.
If the pilot in the sky who couldn't see, hear, and couldn't use the navigation instruments was Xu Cang, Qin Xin felt anxious, and she asked suddenly: "The pilot on the radio just now, do you think he can fall? I am Say, judge from your professional perspective."
The captain couldn't help but stop what he was doing, and looked at Qin Xin with a little surprise.My boss seems to be very concerned about that person in the sky. If I just feel curious, is it necessary to be so serious?
However, even though he was surprised by Qin Xin's attitude, the captain still replied sternly: "He is dead. Although I don't want to say that, but that's what I think. No matter what! The airport should think so too , so the area near the runway must be cleared to prevent harm to others."
This question hardly needs to be thought about. To be honest, even if you are not an insider, you can figure out a question just by intuition. It is rare for Qin Xin to ask it so solemnly.
However, Qin Xin's pretty face turned pale when these words fell into Qin Xin's ears. She asked in a daze, "Then the airport just turned the runway lights to the brightest."
"Maybe it's because he thinks he might not be able to see anything at all, and you want to give him a guide?" The captain guessed, and then asked cautiously: "Boss, let's go down then?"
However, as soon as the captain finished his questioning, Qin Xin yelled violently: "No!"
"Huh?" The captain really didn't expect that Qin Xin didn't want to leave, so he glanced at the secretary behind Qin Xin in confusion.
Although Qin Xin was his boss, he didn't usually communicate with him. Instead, it was Qin Xin's secretary who communicated with him.
The secretary just wanted to persuade Qin Xin, but Qin Xin raised her hand to stop her.Qin Xin suddenly raised her head and looked directly at the captain: "I want you to do something!"
In the cockpit of 9811, Xia Shuyue stared at the airspeed indicator and heading indicator excitedly.Although she first heard Xu Cang describe the possibility of blind flight, she thought it was impossible from the bottom of her heart, but when she really flew, Xu Cang seemed to be able to see it, and the airspeed was stuck at 160 knots and did not move. , while the heading is maintained at 051, with a deviation of no more than one degree.
When Xu Cang was turning, he relied on his physical senses to keep the slope at [-] degrees, and then counted the time in his mind to complete the turning.It can only be said that whether it is the formation of the slope or the timing, if any of them has a large deviation, the aircraft trajectory will greatly deviate from the actual program trajectory.
In terms of mental arithmetic ability alone, Xu Cang is as terrifying as a humanoid computer.
That is to say, Xia Shuyue couldn't see the actual flight trajectory. If she knew that Xu Cang's blind flight trajectory was exactly the same as the program trajectory, she would be even more surprised.
"Brother, just fly like this, the data is not bad at all." Xia Shuyue said excitedly.
Not long ago, Xu Cang couldn't talk to her anymore, and he probably couldn't hear her at all, so naturally he couldn't hear what she said.However, Xia Shuyue didn't care, the dawn of hope came amidst despair, and that excitement had to be vented.
After flying for a while, Xu Cang turned [-] degrees to the right again, that is, turned to the four sides.Xia Shuyue looked down, and there was a mountain not far below the plane. The distance was so close that Xia Shuyue could even clearly see the trees and rocks on the top of the mountain.
But when this turn fell into the eyes of Director Liu, who was always paying attention to the radar, they were shocked.
"He turned ahead?" Director Liu really didn't understand Xu Cang's brain circuit: "Didn't he want to fly along SXS-2Y? Why did he turn around early?"
According to the procedure, the plane should have to fly another six nautical miles before turning into the four sides.Xu Cang's turning timing was obviously advanced, and much earlier.
However, Xu Cang has not lowered the altitude, and there is no problem with the terrain.Once it turns to the fifth side, it will be a flat river, and there will be no terrain obstacles.
However, what does this early turn mean?A group of people here are all led by the nose by Xu Cang, so they can't figure out his intention at all?
Luo Yong didn't know what Xu Cang's intention was, but Ye Xian seemed to have tasted it, and said to himself uncertainly: "Could it be related to his way of descending?"
"If you make a turn ahead of time, it's definitely not because you're worried about being too high, or because you're afraid of being too low?" Ye Xian clicked his lips, trying to figure out Xu Cang's thoughts.
Director Liu was a little confused: "Didn't it mean that this procedure is easy to cause the height to be too high? Even if the shape is established in advance, there is no need to worry about the height being too low, right?"
"Then what if his way of descending for a while is not normal?" Ye Xian had a flash of inspiration: "For example, slowing down the accelerator?"
Director Liu was stunned: "Is the gas pedal turned off?"
"That's right, that's right, it must be!" Ye Xian became excited, feeling excited to guess Xu Cang's thoughts: "Even under the conditions of fixed speed and configuration, different throttles correspond to different descent rates. It is impossible for us to memorize every correspondence, so choose the one we know, which is the rate of descent at idle thrust! The condition for idle thrust yields [-] in the case of landing configuration and final approach speed Descent rates from [-] feet to [-] feet."
As Ye Xian spoke, he suddenly frowned: "However, the rate of descent still fluctuates, and how does he know to verify that he is back on the right track, when can he return to the baseline throttle?"
Ye Xian acted like a madman, constantly deducing Xu Cang's intentions: "Unless, unless he has a verification point to verify his downward trajectory. But where is this verification point? If the helper can understand the approach The map is used as a reference for the descent trajectory, and he shouldn't use the extreme method of slow car descent?"
Just when Ye Xian was trying to understand Xu Cang's thoughts as if obsessed, Xu Cang, who had turned perfectly to the fifth side again, did a mental calculation to align the runway, and as expected, he turned off all four throttle levers.
With the throttle fully at slow speed, the aircraft begins to gradually form a descent rate. As Ye Xian said, the descent rate is floating upwards at [-] feet.However, this value has been unstable, which is out of Xu Cang's control.Because of this, Ye Xian didn't understand how Xu Cang made the final correction under the unstable descent rate, and where is the correction verification point?
Suddenly, Xia Shuyue yelled: "Brother, I saw the runway, and the Qingfeng Building is right in front."
Even though she knew Xu Cang couldn't hear her, Xia Shuyue couldn't hide her excitement.From her eyes, it seemed the plane was still on the right track.
In fact, although Xu Cang could not see, he was not completely blind.In his field of vision, his eyes were almost completely covered by dark red, so naturally he couldn't distinguish things.
But after turning to the five sides, Wei Wei seems to see a little halo, which is very vague.However, it is also a rough guide.According to Xu Cang's guess, this halo is probably the runway lights.It's just that this halo is too blurry, it's okay in the distance, but it's just blurred when it's close up, and it can't be used as a guide at all.
However, let's talk about the near things later, let's do the front things well first.What happens next is left to God's will!
At this time, in the Gulfstream business jet, the captain let out an extremely shocked cry: "Boss, what do you mean, let me enter the runway, what are you doing on the runway, there is a plane about to land soon."
Through the windshield, he was even able to visually observe a behemoth on the verge, and entering the runway at this time, isn't it a runway incursion?
"No, no!" The captain shook his head like a rattle: "Boss, as long as I drive the plane in, my license will probably be revoked. What will I eat for the rest of my life?"
Qin Xin's expression was incomparably cold: "If you don't go in now, I will make you unable to eat the meal of flying, believe it or not? If you listen to me, even if the Civil Aviation Administration revokes your license, I will be in the group You find a job that is more leisurely than now, and the salary is higher than now, and I will give you a position, this is my promise!"
The captain's face became gloomy, Qin Xin's words were not just words.Spring and Summer Tourism maintains good business relationships with major airline companies. If Qin Xin speaks up, the airline companies will still give some face.And most of the wealthy people who can use business jets have some personal relationships, and business jet jobs are hard to find, so it's normal for Qin Xin to let him find other jobs.
As a result, the business jet cannot fly, and it is impossible to return to Department 121. It is really blocked!
The secretary hurriedly persuaded: "Miss, this is too dangerous!"
"Shut up!" Qin Xin resolutely shouted, she looked around, it was already too late, the plane would land if it was too late, then everything would be too late.So, he said sharply, "Make a decision!"
The co-pilot's face turned pale!I don't know why things have developed into the current situation.
"Okay!" The captain seemed to have made a huge determination, and said directly to the co-pilot: "Start the engine!"
Unlike large passenger jets, the engines of business jets start quickly, and only one engine is enough to taxi, and there is no need for two engines to be good.
The co-pilot was already stunned: "Captain, are we really going in?"
"Then what can we do?" The captain was ready to revoke his license at this moment, seeing that the co-pilot was frightened, so he decided to come by himself.At the same time, he asked Qin Xin: "Boss, what do you want me to do after I enter the runway?"
Qin Xin let out a long breath, and pointed to the five sides: "Facing the nose there, turn on all the lights!"
At the same time, the plane was at exactly [-] feet after flying over the Qingfeng Building without error.Xia Shuyue, who was overjoyed, patted her palm on Xu Cang's back according to the previous agreement.
Such an action was quickly received by Xu Cang, and he couldn't help being excited.This shows that it was correct to follow the halo before, it should indeed be the runway lights, and the height is not too different, which is an excellent sign.
Now that the altitude is okay, Xu Cang pushed all the throttle sticks to the reference throttle for approach.The stroke of the throttle lever is already deeply in Xu Cang's genes, he doesn't even need to look at the instrument, he knows how much thrust there will be as soon as he pushes the throttle up.
Depending on the altitude of the airport, there will be different reference speeds. As long as the reference speed is maintained, the descent rate of the aircraft will remain relatively stable and correct.
According to the previous agreement, after passing the Qingfeng Building, Xia Shuyue hurriedly sent a simple signal to the purser to make a collision prevention broadcast.
In the next minute or so, it will be the moment of life and death!
There is no major problem with the altitude or the glide trajectory for the time being, but the problem with the roll appears.Xu Cang can guarantee that the steering wheel is always level, but even if there is little wind in this field, it is not without. As long as there is a little side wind, the plane will be blown parallel to the correct course. This process is Xu Cang. What he cannot perceive is also the most powerless part of him.
Previously, relying on the halo of runway lights, he roughly kept the final course correct.But at a low altitude, the halo of light is all blurred, unable to guide at all.
At low altitudes, a slight deviation is fatal. The 60-meter runway width is not for people to squander at will, and there is almost no room for error.
But the problem is, he has no new guidance!As long as you give him a guide, even for a moment!
If it goes on like this, it really depends on God's will whether he can live or not!
It was at this extremely urgent juncture that a ground controller in the tower control room suddenly noticed that the signal of the Gulfstream N254DC, which was clearly parked on the business apron, suddenly turned on, and then went out quickly.
The ground controller was stunned for a moment, thinking that the crew had mishandled the transponder, and didn't take it to heart at first.However, soon he always felt uneasy, so he picked up the binoculars at hand and stood up, looking at the head of runway 23.
It's just this glance that made his back break out in cold sweat. He put down the binoculars, pointed in the direction of the head of runway 23, and shouted at Director Liu: "Director, Director! A plane has entered the runway!"
Xia Shuyue, who was sitting on the right seat, had her heart pounding in her throat at the moment. As the altitude got lower and lower, she could already clearly see the signs on the runway.But she always felt that the plane was a little left, but she was not sure, and she didn't know what to do.
Just when Xia Shuyue was hesitating and struggling, the figure that appeared from the connecting road at the entrance of the runway was reflected in Xia Shuyue's eyes, and the pupils locked instantly.
"One hundred feet!" Xu Cang silently calculated the altitude of the plane. If the rate of descent did not fluctuate so much, he should be over the runway soon.
However, an ever-existing fear lingers in Xu Cang's heart. Is the plane on the five-sided extension line?
At this moment, a spot of light lit up without warning in the originally vast halo, and was quickly assimilated by the halo, as if the spot of light was like an illusion.
However, as if guided by the gods, Xu Cang pressed the plate to the right, and followed the light spot at the last moment.He didn't know what that light spot represented, but everything was so logical that he almost didn't think about it, so he turned the plane to that place.
Almost at the moment when the slope formed, Xu Cang suddenly felt a lift, as if a giant hand gently supported the plane.
It was at this quarter of an instant that the plane seemed to stop sinking and began to float around Xu Cang.It was this sign, Xu Cang knew that the plane had reached the moment of leveling out, without any hesitation, he turned off the throttle, and then gently began to increase the attitude.
In about a second or two, when the plane was in the grounding attitude, the wheelbarrow hit the runway hard. Even with the shoulder straps fixed on it, Xu Cang's body couldn't help jumping for a moment.
However, Xu Cang almost screamed out.The moment the plane touched down, he knew it was on the runway!
They survived!
No, I'm so stupid, I'm too tired!
The plane has landed, and I will have a day off tomorrow. These days, it’s almost every day, and I can’t stand it anymore!Get lazy on the last day of August.
Tomorrow is the last day, let's vote with the monthly tickets in hand!
(End of this chapter)
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