YF-77 | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-10-02

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/YF-77


00:00:53 1 Development
00:02:44 2 Technical Description



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Speaking Rate: 0.8781364412214705
Voice name: en-US-Wavenet-E


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SUMMARY
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The YF-77 is China's first cryogenic rocket engine developed for booster applications. It burns liquid hydrogen fuel and liquid oxygen oxidizer using a gas generator cycle. A pair of these engines will power the LM-5 core stage.  Each engine can independently gimbal in two planes. Although the YF-77 is ignited prior to liftoff, the LM-5's four strap-on boosters will provide most of the initial thrust in an arrangement similar to the European Vulcain on the Ariane 5 or the Japanese LE-7 on the H-II. Like the Vulcain, the YF-77 uses the less efficient gas generator cycle and even for that application it has less performance than the European engine.