The YF-100 is a Chinese liquid rocket engine burning LOX and kerosene in an oxidizer-rich staged combustion cycle.

[7][8][9] Testing was directed by the China National Space Administration (CNSA) commencing in 2005.

[7] It is the first Chinese rocket engine to adopt the staged-combustion cycle and the most powerful to date.

Its preburner burns all the LOX mass flow with a bit of kerosene to generate hot gas that powers the single turbine.

[13] The development required ten years of research, requiring the mastering of 70 key technologies, the development of 50 new materials, and the construction of 61 sets of engines with a combined total of more than 40,000 seconds of ignition time by 2013.