YF-77 rocket engines tested for Long March-5B Y4

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China Aerospace Science and Technology Corporation (CASC) has competed testing of the YF-77 rocket engines for the Long March-5B Y4 launch vehicle. YF-77 is a high thrust hydrogen-oxygen engine designed for the Long March-5B series of launch vehicles. The Long March-5B Y4 launch vehicle will launch a new module of the China Space Station.
Credit: China Media Group(CMG)/China Central Television (CCTV)/China Aerospace Science and Technology Corporation (CASC)