Chapter 222 Failure

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

The launch center connected to Beijing, and Academician She, the general person in charge of the Shuguang Project and the commander-in-chief, appeared on the screen.

Yun Hongjun: "Report to the commander-in-chief, all sensors of the rocket are normal, line communication is normal, and weather conditions are good. The launch procedure can be continued. Please give 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. In the launch center, except for the voice of the announcer from time to time, there was only the sound of inhalation.

On the beach in the distance, hundreds of thousands of spectators from several countries gradually quieted down, waiting for that moment.

Zhou Qingfeng sat cross-legged on a chair. His grandfather Zhou Rui was at school, and he watched alone at home.

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

His favorite thing to do every week is to put the child in the back seat when his grandfather's colleague flies at Hushan Airport, and overlook the earth and blue sky on the Caiyun trainer.

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

Host: "This launch carries an early new generation manned spaceship test ship, which is a second-use test ship. It will once again verify the reliability of the spaceship 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 in the night, but he is unaware of it, just staring at the rocket and the countdown numbers on the upper left of the screen.

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

When the huge water flow submerged the engine at the bottom, the eight YF130 engines of the four boosters of the Long March 10 ignited first, and the flames touched the cooling water and immediately turned the latter into a violently expanding fog, which continued to spread around.

"Three, two, one!"

"Main engine start!"

Amid the countdown in multiple languages ​​on the beach, all 10 YF130 staged combustion cycle liquid oxygen-kerosene engines with dual combustion chambers started up. Each of the 20 nozzles had a sea level thrust of more than 240 tons, merging together into a ball of orange light, completely covering the launch pad.

Even though the sun had risen long ago, people still felt that the second sun in front of them was more dazzling. The light of the orange-yellow flame shone on everyone's face, reflecting the redness of the ground.

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

The 10 YF130s that took only 8 months to finalize and produce were unusually stable. The thrust difference of the 10 engines did not exceed 0.5%. The control computer hardly needed to deflect the nozzle, and the rocket could climb steadily upwards.

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

The engine, which has reached 106% working status, has output a total of 5,100 tons of thrust at this time. The audience, who are not the first time, can feel the familiar earthquake again, and even the whole body is vibrating from the inside out because of the sound waves in the air.

Until flying over the clouds, the flight posture of the Long March 10 is extremely stable. The speed of 7 Mach has caused the position of the booster cone in the middle of the rocket body to produce a flowing sonic boom cloud.

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

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

Claire stared at the rocket body closely, but could not find anything abnormal.

At 190 seconds, the fuel of the four boosters was exhausted, the explosive bolts of the separators were 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, Shelev smiled.

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

At this point, the tense atmosphere in the launch center has begun to dissipate and gradually become relaxed.

Only a few people are still staring at the screen, watching the ignition of the second stage.

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

At this time, thrust is no longer the main factor. The specific impulse of the YF77 for more than 400 seconds can directly send the third stage and the 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 maiden flight, the second stage rocket will only work for a short while, 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 also turn around and return after 24 hours.

Victory is just around the corner.

When Yun Hongjun was about to wipe his sweat with a sigh of relief, a voice sounded in the control room:

"5A engine abnormally shut down!"

The engine number of the Long March 10 is 0 for the core stage, 1 to 4 for the four boosters, and 5 for the second stage, and then there are four engines, ABCD.

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

At the same time, in the camera picture at the tail of the second stage rocket, something seemed to fly out of the tail of the shut-down engine.

Everyone knows that it is a part of that engine.

This means that the flight computer found that the 5A engine had a catastrophic failure. In order to avoid affecting the other four engines, it was directly shut down, but a part-level accident still occurred.

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

Since the 5A engine was shut down, the symmetrical 5B engine had to be shut down for balance, leaving only two YF77s that could work. Although the payload could still be put into orbit, it could no longer be pushed into the lunar orbit.

It had only burned for less than 20 seconds before it failed. You should know that the YF77 needs to work for a total of 420 seconds, and even needs to consider multiple starts and stops.

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

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

"Turbopump, turbopump... It must be a turbopump problem. Liquid hydrogen is too cold and corrosive. We should test it more."

At this time, Claire, who was about to turn off the computer and go to sleep, also found something wrong. On the animated simulation route in the live broadcast, the orbit of the upper stage rocket had an abnormal deviation.

In less than a minute, he knew what happened.

Even if two YF77s were enough to complete this maiden flight mission, the Long March 10 in this state was obviously unable to send the spacecraft assembly to the moon.

The maiden flight of the Long March 10 was only a success.

Claire closed her eyes and looked up to thank God, and finally couldn't bear the sleepiness and fell asleep.

Back to single status~ From now on, women are passers-by, adjust the status, everything is for update

(:3っ)=≡=-∴’Σ[______]