Coquettish Rebirth

"Doppler radar? Of course you can. This Boeing 707 has been installed on it, so there should be no problem. After installing it, you can say hello to the Civil Aviation Administration of China and ask them to come and check to see if the electromagnetic interference is within the allowable range. " Lao Song said here, looking at Jia Hongjian a little surprised, he simply continued to introduce: "There are not many civil aviation aircraft equipped with Doppler radar, or although civil aviation aircraft are equipped with radar, most modern aircraft They should be equipped with weather radars, and their weather radars are mainly used to detect water droplets, that is, to detect cumulonimbus clouds, storms, etc. But now many aircraft are not equipped with radars in the true sense. It is also due to the development of the world's automatic flight navigation system. Nowadays, civil aviation basically has a radio beacon station at a certain distance. This beacon station sends radio signals around. According to the flight database to reflect whether it is necessary to turn or not. However, installing a Doppler radar can also supplement the air collision avoidance system to a certain extent..."

After saying this, Lao Song hesitated for a moment, and seeing that Jia Hongjian was about to ask, he took the initiative to explain—"The air collision avoidance system in the United States is actually based on accepting other people's aircraft. The information sent by the transponder. The transponder of the civil aviation aircraft will automatically send information such as its speed, altitude, heading, etc. If the data sent by their aircraft computer says that they are at an altitude of 5000 meters, then your The air collision avoidance system actually received the opponent’s aircraft at an altitude of 5000 meters, not the actual altitude of the opponent—if the computer of the other aircraft fails at this time. If they are actually at 4000 meters, then our aircraft thinks they are at 5000 meters, it is easy to go wrong... Then there is another Doppler radar, which can calculate the relative speed and relative distance of the aircraft relative to us... But such a calculation result does not necessarily have an aircraft response The accuracy of the calculation is accurate. For example, the radar detects that the opponent is scurrying up and down in waves within a range of 1000 meters in height, but in fact the opponent may be flying smoothly all the way, so this can only be used as a reference , mainly to detect various wind cutting conditions and weather conditions..."

wipe!So this kind of primary radar is still so unreliable?But also, if you think about it, things like radar.It seems to rely on radar waves to shoot past and then bounce back for calculation.In this case, only the relative position change can be calculated.Even if it is a radar like Doppler, it can calculate the relative running speed through the frequency change of the radiation, which is the same as the small radar used by the police uncle to measure the speed of drag racing. is relative.It is not possible to measure the true height.It can only serve as a reference.Otherwise, why should the civil aviation system of the world evolve from primary radar to secondary radar?Isn't the evolution into secondary radar because it can obtain various data relatively more accurately!

However, Jia Hongjian was still very dissatisfied with this.honestly.Let him entrust his own life on the error-free computer of other people's planes, how could he accept it?Let's not say that we are rich and handsome, we are the only son of the richest Chinese family in the world, we are just poor, and we can't place our lives on chance, can we?And it is still pinned on the probability that others will not make mistakes!If we have no money, we will hold our noses and fight for character, but now Jia Hongjian is rich!Why can't he spend more money to make his own plane as safe as possible from being hit by others?

But it's really hard to think about it. After all, Jia Hongjian is not a professional aviation expert, and his idea may be very funny to professionals.For example, the first thing Jia Hongjian thought of was to put a parachute inside the cockpit, but after thinking about it, he immediately denied it - it's very simple, he can't parachute.And if you think about it carefully, when his plane was in the middle of the flight, it was at an altitude of 2000 meters. Could it be that there was a breakdown at that time, and Jia Hongjian bravely jumped down with a parachute?Come on, that's no good being taller than Mount Everest!What kind of clothes do mountaineers wear when they go to climb Mount Everest?Jia Hongjian was still wearing a short-sleeved shirt in the plane, and he appeared directly at an altitude [-] meters higher than Mount Everest?This is purely for death, okay?

And if a parachute falls down, it may not be safe—don’t forget that the longest flight route of Jia Hongjian’s plane is across the Pacific Ocean. In other words, it is very likely that Jia Hongjian jumped off halfway, Then it fell into the sea.He didn't have any life-saving equipment, just a parachute, and he didn't know how serious the frostbite was. He didn't even have a life jacket. Even if he could swim, would he really want to swim across the Pacific Ocean?right?Lin Yifu swam across the Strait of Daiwan, so he still took two basketballs!He, Jia Hongjian, has nothing here, not even food and drink, and is floating alone in the middle of the ocean. How can he swim to China or the United States?

In this way, what Jia Hongjian thought of was the cockpit ejection device like a fighter jet—isn’t it possible for a fighter jet to eject the seat when it is in danger?Of course, Jia Hongjian's plane did not have a position that could restrict Jia Hongjian.When other fighter pilots are flying, they are always in their seats, and it is impossible for him, Jia Hongjian, to sit in his seat and wear a seat belt all the way, right?So speaking of it this way, it doesn't seem to be very useful just to flip the position away...

So how about bombing the entire cockpit?That is to say, the entire passenger cabin... No, what should the driver do in that case?right?The pilot encountered a malfunction or something, and he was trying his best to pull the plane, but Jia Hongjian ejected the entire cabin, and the whole plane suddenly became like a fish bone, that is, the head is heavy and the body is light. The aerodynamic structure of the entire aircraft has changed, coupled with the power of explosive bolts, the entire aircraft might explode into two sections!Isn't the pilot of the family equal to being killed by Jia Hongjian and the others?After this, after the first time, who would want to be Jia Hongjian's pilot the second time?right?Turn around and encounter danger.We are not on the same boat, Jia Hongjian directly sold his teammates to kill them, who would want to be teammates?

So, if you want to save them, you must save them together!But how to save them together?If the pilot ejects with the passengers...isn't that equivalent to ejecting the entire plane?right?The cockpit ejected, then the cabin ejected, what's left of this plane?right?If so many parts are to be ejected, then the structure of the entire aircraft will definitely be difficult to design-such an aircraft needs to cruise at twice the speed of sound, and in this case, it is necessary to ensure that the overall structure of the aircraft is at an altitude of [-] meters. When it flies, it doesn't fall apart.Then it needs to be able to blow up and blow up the upper half of the entire plane...

So this matter.It's quite troublesome to think about it carefully, but at this moment, a fresh idea suddenly appeared in Jia Hongjian's mind-well, for the safety of the entire aircraft, how about popping out a parachute for the entire aircraft at the last moment?In Jia Hongjian's previous life.Heard about the Sino-Russian joint military exercise.The Russians have demonstrated that people sit in the tank and directly drop them together! A 60-ton tank can be air-dropped directly from the plane.Why can't the whole plane be "airdropped"?

Thinking of this, even Jia Hongjian himself knew that this idea was a bit whimsical, but at least it was much more suitable than the other two ideas.right?So at that time, Jia Hongjian asked directly: "By the way, Mr. Song, can you put a big parachute on our plane? I mean... put a huge parachute on the tail of the plane. When the plane breaks down , A parachute comes out directly from the buttocks, and then the whole plane is suspended and slowly descended?"

After he asked this question, Lao Song and his group of aircraft designers were dumbfounded at that time!Why are you dumbfounded?Because no one in the world has ever thought of Jia Hongjian's idea!Of course, if you want to be serious, it’s not like no one has figured it out—some fighter jets have parachutes behind their buttocks, but this is not for “airdropping” planes for forced landing when there is a problem in the air. There are ejection seats, so this kind of "parachute" is actually a deceleration parachute. To put it bluntly, it is used to shorten the landing distance when landing, so as to facilitate the take-off and landing of temporary airports in wartime, and can relax the restrictions on the airport. Require.

At that time, Lao Song's first reaction was that Jia Hongjian was going crazy.After all, hitting the parachute on the whole plane is too whimsical!But after thinking about the rebuttal for a while, he realized... Hey, there seems to be no reason why a plane cannot be loaded with a big parachute!That's right!Reasons are not enough to refute!Why do you say that?If so, why didn't Boeing and Airbus think about it that way?It's very simple, they are all big planes!How much does the plane weigh for the kind that can take hundreds of people at once?How big a parachute do people need to hoist the entire plane up and slowly descend?Besides, how much toughness does such a parachute require for the body structure and the connecting ropes?Although the structure of the aircraft looks very, very strong, their skins are still made of aluminum after all!For fuel economy, of course they want to make the plane as light as possible!When the plane plummeted back down suddenly, it was suddenly pulled by the parachute. How many g's of instantaneous acceleration would it take?Maybe the big plane disintegrated in the air after doing this, okay?

However, the small plane is different!This thing is just like living things. Although ants can lift food that is several times their own body weight, if the ants reach the size of a human, they will not be able to lift it up!This is the same as Yao Ming's soles. When the weight reaches a certain level, the structure that could be relied on before may become very fragile!The soles of ordinary people's feet may not be as fragile as Yao Ming's, but Yao Ming is too tall and heavy, so it is more likely to be damaged!Just like among the various giants in the world, many people have knee problems!It is because their knees cannot bear the weight of their bodies!

Therefore, just because big planes can't stand it doesn't mean that small planes really can't stand it.After all, Jia Hongjian's special plane is actually much smaller than Boeing's big plane. The entire plane is only a fraction of the size of others, and its capacity is only a dozen people!If such a small twin-engine plane encounters problems in the air, try to control the speed as much as possible, and descend to, say, 3000 meters, so that the speed is not too fast, even when the plane is on the verge of stalling, just when the plane is about to go down like an iron weight When it falls, it might be really feasible to make such a parachute! (To be continued..)