The First Large-size Titanium Alloy Nozzle Thrust Chamber Of The Sixth Academy Of Aerospace Science And Technology Was Successfully Tested

The first large-size titanium alloy nozzle thrust chamber of the Sixth Academy of Aerospace Science and Technology was successfully tested

On April 17th, the 7103 factory of the Sixth Academy of Aerospace Science and Technology Group conducted a test run of the liquid oxygen kerosene engine after the secondary pump of China's new-generation manned launch vehicle. The test run started according to the scheduled procedure, and the engine worked for 10 seconds. The test run was a complete success.

The engine in this test run adopts the first titanium alloy large nozzle thrust chamber newly developed in our country, which greatly reduces the weight of the engine. The assembly of the engine adopts the inverted assembly scheme. The feasibility of the titanium alloy nozzle scheme was successfully verified in this test run.

The new—generation manned launch vehicle secondary pump rear pendulum liquid oxygen kerosene engine develops titanium alloy nozzles on the basis of the existing engine thrust chamber to realize the effective connection between the copper-steel material system of the existing thrust chamber and the titanium-titanium structure, further reducing the weight of the engine, improving the thrust-to-mass ratio of the engine, and improving the effective carrying capacity of the rocket.

It is reported that at the beginning of the project of this type of engine, our country did not have experience in the development and production of large-size titanium alloy nozzles, and everything needed to be “started from scratch.” Facing the arduous research task, the 7103 factory set up a research team for the development of titanium alloy large nozzle. Facing one technical problem after another, the research team fully carried forward the spirit of aerospace, and actively carried out technical research and intellectual research. In order to ensure the progress of the development of titanium alloy nozzles, the research team regularly organizes regular meetings to coordinate, study and deal with the problems and difficulties in the development process in a timely manner. After 5 years, the research team has successively overcome a number of key technologies, successfully developed China's first large-size titanium alloy nozzle thrust chamber, and delivered it for test run as scheduled.