Recently, the second substage of the Long March 8 improved launch vehicle (referred to as the "Long March 8 modified rocket") and the general hydrogen-oxygen final stage developed by the China Academy of Launch Vehicle Technology successfully completed the first test run of the power system in Beijing. This test run is of great significance to the entire development work and the first flight of the subsequent model.
In the past, our Long March series of medium-sized rockets used a 3-meter-diameter hydrogen-oxygen final stage. 3The 35-meter-diameter general-purpose hydrogen-oxygen final stage, which has undergone a series of technical improvements, is a general-purpose product for China's new generation of medium-sized launch vehicles, which plays an important role in improving the comprehensive performance of the Long March rocket, especially in the low-orbit 800 to 1000 km or 800 to 1200 km orbit, and giving full play to the characteristics of the hydrogen-oxygen engine. The success of this test shows that we have taken an important step in the development of the general hydrogen and oxygen final stage, and preliminarily verifies that our design can meet the requirements. Song Zhengyu, chief designer of the Changba Rocket, introduced.
This test run is the largest test in the development of the Chang 8 rocket. Song Zhengyu introduced that this test run is the first time in the past 10 years that the power system of the final stage of hydrogen and oxygen has been tested for China's aerospace, and it is also the second time to carry out such work in the past 30 years.
*:Science and technology** Synthesized from China Academy of Launch Vehicle Technology).
Editor: Jin Xin].
*:Technology**].