I ask you to build tractors, but you build rockets?

At 8:45, the rocket conducted its final round of self-inspection before launch.

The launch center was connected to the capital, and the person in charge of the Dawn Project and the commander-in-chief, Academician She, appeared on the screen.

Yun Hongjun: "Report to the commander-in-chief that all the sensors of the entire rocket are normal, line communications are normal, and the weather conditions are good. The launch process can be continued. Please give me your instructions!"

"Launch as planned!"

The connection process was short, but everyone in the control room saw the seriousness on Academician She's face.

As time passed by, the launch time slowly approached, and apart from the announcer's voice that sounded from time to time, the only sound left in the launch center was the sound of breathing.

Hundreds of thousands of spectators from several countries on the beach in the distance gradually fell silent, waiting for that moment.

Zhou Qingfeng was sitting cross-legged on a chair, his grandfather Zhou Rui was at school, and he was watching alone at home.

Although he is only a sixth-grade primary school student now, according to his grandfather's plan, he will definitely be able to enter Southern University of Aeronautics and Astronautics or Xinyuan and become an engineer and astronaut.

His favorite thing to do every week is that his grandfather’s colleague puts the child in the back seat while flying at Hushan Airport, overlooking the earth and blue sky on the Caiyun trainer plane.

Three minutes before launch, the last words on TV came from the news studio:

Host: "This launch carries an early new-generation manned spacecraft test ship. It is a test ship for secondary use. It will once again verify the reliability of the spacecraft and the stability of the Long March 10 rocket."

Sixteen thousand kilometers away, in Claire's office, the curtains have been drawn, and only the screen emits a dazzling white light at night, but he is unaware of it and just stares at the rocket and the countdown numbers in the upper left corner of the screen.

"ten, nine, eight...Booster engine starts."

When the huge water flow flooded the engines at the bottom, the eight YF130 engines of the four boosters of the Long March 10 were ignited first. The flames touched the cooling water and immediately programmed the latter into a violently expanding mist, which continued to spread in all directions.

"Three, two, one!"

"Main engine start!"

Amidst the multi-language countdown on the beach, 10 dual-combustion chamber YF130 staged combustion cycle liquid oxygen kerosene engines were all started. Each of the 20 nozzles has a sea-level thrust of more than 240 tons, and they merged together into a ball. The orange light group completely covered the launch pad.

Even though the sun had risen long ago, people still felt that the second sun in front of them was even more dazzling. The rays of orange flames shone on everyone's face, making the ground red.

Serev stood up and walked to the window of the launch center and saw the rising star in the distance.

The 10 YF130s that were finalized and produced in just 8 months are unusually stable. The thrust difference between the 10 engines is no more than 0.5%. The control computer barely needs to deflect the nozzle, and the rocket can climb steadily upwards.

Since the four boosters of Long March 10 are the same as the core stage, similar to the strengthened CBC, the thrust-to-weight ratio is very high, reaching 1.41, and the ascent speed is much faster than that of Xinyuan 3.

The engine, which had reached 106% working status, had output a total of 5,100 tons of thrust. This was not the first time that the audience could feel the familiar earthquake. Even the sound waves in the air made the whole body vibrate from the inside out.

Until it flew through the clouds, the Long March 10's flight attitude was extremely stable. It had reached a speed of Mach 7, which caused a flowing sonic boom cloud to be generated at the position of the booster cone in the middle of the rocket body.

The airflow flows backward along the rocket body, but is expanded and spread by the tail flame of the engine at the rear. This scene is clearly shown in the camera.

For a full 150 seconds, it was difficult to see down to the ground, and the rocket did not seem to have any accidents.

Claire stared at the arrow body closely and couldn't find anything unusual.

At 190 seconds, the fuel of the four boosters was exhausted, the explosive bolt of the separator was energized, and with the slight vibration of the core stage, the four boosters fell to the ground in a cross shape.

"Korolev Cross!"

Hearing someone say this term in a low voice, Serev had a smile on his lips.

After another 10 seconds, the core first stage fuel was also exhausted, the two YF130 engines shut down, and the first stage separated.

By now, the tense atmosphere in the launch center had begun to dissipate and became more relaxed.

Only a few people were still glued to the screen, watching the secondary ignition.

In 200 seconds, the four YF-77 hydrogen and oxygen engines of the second-stage and third-stage combination that had been sent out of the atmosphere by one and a half stages (boosters are generally considered half stages) were ignited.

At this time, thrust is no longer the main factor. The YF77's specific impulse of more than 400 seconds can directly send the third stage and payload all the way to the lunar orbit, and the thrust is not small. The total thrust of the four YF77s is 280 tons, which is quite powerful.

According to the process of this first flight, the second-stage rocket will only work for a short time, and after completing the test, it will separate and fall into the atmosphere. The remaining third-stage rocket will use two YF77s to send the test spacecraft into orbit for testing, and will turn around and return after 24 hours.

Victory is at hand.

Even when Yun Hongjun was relieved and ready to wipe his sweat, a voice sounded in the control room:

"5A engine shut down abnormally!"

The engine row number of the Long March 10 is that the core stage is 0, the four boosters are 1 to 4 in sequence, the second stage is the number 5, and then it is divided into four engines ABCD.

Now, one YF77 of the second stage rocket is shut down.

At the same time as this was happening, in the camera footage at the rear of the second-stage rocket, something seemed to fly out from the rear of the engine that was shut down.

Everyone knew that those were parts of that engine.

This shows that the flight computer discovered that the 5A engine had a catastrophic failure and shut it down directly to avoid affecting the remaining four engines. However, a parts-level accident still occurred.

The experts sent by the Sixth Academy to the Qiongzhou site happened to include Liu Minglu, the deputy chief engineer of YF77. At this time, his heart skipped a beat.

Since the 5A engine is shut down, the symmetrical 5B engine must be shut down for balance. Only two YF77s are left able to work. Although they can still put the payload into orbit, they can no longer push it to the lunar orbit.

It only burned for less than 20 seconds before it failed. You must know that YF77 needs to work for a total of 420 seconds, and even needs to consider starting and stopping multiple times.

With the current quality, can the lunar mission be successfully completed?

When everyone around them focused their attention on Liu Minglu, the latter just kept repeating three words:

"Turbo pump, turbo pump...it must be a problem with the turbo pump. The liquid hydrogen is too cold and corrosive. It should be tested more."

At this time, Claire, who was about to turn off the computer and go to sleep, also discovered that something was wrong. On the animated simulation route in the live broadcast, the trajectory of the upper stage rocket had shifted abnormally.

Within a minute he knew what was happening.

Even two YF77s are enough to complete this first flight mission, but the Long March 10 in this state is obviously unable to send the spacecraft assembly to the moon.

The first flight of Long March 10 can only be regarded as a success.

Claire closed her eyes and looked up, thanked God, and finally couldn't stand the sleepiness and fell asleep.

Back to single status ~ From now on, women are just passers-by, adjust your status, everything is for renewal

(:3っ)=≡=-∴’Σ[______]