The engine exploded 4 times in 1 year! Revealing the development of the Fat Five engine, what has

Behind it is the hard work of countless R&D personnel and staff. For example, the fuel problem of the engine has been experimented countless times, and the parts of the engine to the engine as a whole have also undergone countless experiments.

The development behind them is full of sadness and sweat, in order to develop a self-made engine, violent testing.

It has gone through many R&D failures behind the scenes to achieve today's results.

In fact, they put in a lot of effort, every day without stopping, just to make this engine better, but still ignore some details.

It took 300 people three months to work in the factory, and it can be said that it is the carrier rocket with the largest low-earth orbit carrying capacity in China.

A large rocket is naturally inseparable from a large thrust, and a large thrust is inseparable from the engine. Before the Long March 5, the maximum thrust of a single rocket engine in service in China was only about 70 tons, and it was "inadequate" to launch a super-large spacecraft. A new type of high-thrust engine came into being.

According to Zhou Limin, secretary of the Party Committee of the Sixth Academy of China Aerospace Science and Technology Corporation, after 15 years of unremitting research, eight newly developed 120-ton liquid oxygen kerosene engines have been installed on the four boosters of the Long March 5, and four newly developed hydrogen-oxygen engines have been equipped with two each on the first-stage and second-stage rockets.

With hundreds of parts and components, how do you get your engine off to a smooth start? The R&D team regrouped and analyzed the cause of the failure from the best fragments. They did more than 100 tests in a row for a valve problem, doing tests during the day, analyzing data and assembling products at night, and the longest one, 300 people lived in the factory for 3 months.

After nearly a year of exploration, we finally saw the dawn of hope.

For the engine, overcoming the difficulty of materials is only the first step in the long march. The next step is extremely difficult, this is a picture of an engine test, the engine that has just been developed, a little fire on the test bench. In the early days of the development of the liquid oxygen kerosene engine, including such a **, failures occurred four times in succession.

2001 was the most difficult year for the development team of liquid oxygen kerosene engine. This year, four test runs of the whole aircraft were carried out, all of which were unsuccessful, and two of them occurred in a row, which is also unique in the history of China's aerospace.

First of all, they will break through a lot of obstacles, such as which nut is loose, and they have to figure it out, but it will take a long time.

Zhao Guangpu, deputy director of the Science and Technology Committee of China Iron and Steel Research Institute Science and Technology Group Gaona Company, showed that when he first tested the process, because he did not grasp the process parameters, we also had no bottom in his heart, so as long as the process parameters were slightly wrong when he tried it, the material would be gone in two or three seconds like a goddess scattering flowers. But there is no foundation, so start from scratch. Ge Lihu, who has been dealing with rocket engines all his life, has recorded all the problems encountered in the development of rocket engines for more than 30 years, and these 120 record books have also become a key to solving the problems.

It is understood that the test of a valve problem, the scientific research team has done more than 100 times in a row, doing tests during the day, analyzing data and assembling products at night, the longest one, 300 people lived in the factory for 3 months. After nearly a year of exploring the manuscript, I finally saw the dawn of hope!

This is the crystallization of the wisdom of engineers and another embodiment of China's scientific and technological progress.

The development of a new engine is the result of a scientist's life's work and is very inspiring.