The "culprit" affecting the launch of Austar is actually an aluminum surplus that is much smaller than a grain of rice. It makes the control contact on the program distributor short-circuit, which leads to the wrong shutdown of the first and third booster rockets.

The launch vehicle consists of hundreds of thousands of components, and any tiny link error will lead to the whole launch failure. 1980, when the European space agency launched a rocket, the operator accidentally knocked off the trademark of a component, which fell into the fuel supply system, causing blockage and causing the rocket to fall into the sea halfway.

As a result, China Academy of Launch Vehicle Technology opened up a battlefield to catch up with the Long March II bundled rocket. After working day and night, after 100 days, the astronauts finally successfully built another Long March II rocket and successfully launched Austar.

Extended data

Cause analysis of launch failure of Long March 5 Remote II rocket

2065438+On July 2, 2007, the Long March V rocket was launched at Wenchang Space Launch Site in Hainan, and the rocket suddenly broke down when it flew for 346 seconds. According to the results of analysis, simulation and ground test, the failure is due to the abnormal local structure of the turbine exhaust device of the first unit of the core liquid hydrogen liquid oxygen engine in complex mechanical and thermal environment, and the engine thrust suddenly drops sharply, which leads to the failure of the launch mission.