Video Caption: The YF-77 rocket engine for the Long March-5 Y4 launch vehicle was tested for 100 seconds on CASC’s rocket engine test facility in Beijing, China, on 19 January 2020. Wang Shuguang, director of engine test, presented the facility and Wang Weibin, deputy chief designer of the Long March-5 rockets, explained the test. YF-77 is China’s first cryogenic rocket engine that burns liquid hydrogen and liquid oxygen as fuel. The China Aerospace Science and Technology Corporation (CASC) is the main contractor for the China’s space program.
Credit: China Central Television (CCTV)