The YF-115 is a

Chinese Chinese may refer to: * Something related to China * Chinese people, people identified with China, through nationality, citizenship, and/or ethnicity **Han Chinese, East Asian ethnic group native to China. **'' Zhonghua minzu'', the supra-ethnic ...

liquid Liquid is a state of matter with a definite volume but no fixed shape. Liquids adapt to the shape of their container and are nearly incompressible, maintaining their volume even under pressure. The density of a liquid is usually close to th ...

rocket engine A rocket engine is a reaction engine, producing thrust in accordance with Newton's third law by ejecting reaction mass rearward, usually a high-speed Jet (fluid), jet of high-temperature gas produced by the combustion of rocket propellants stor ...

burning

LOX Lox is a fillet of brined salmon, which may be smoked. Lox is frequently served on a bagel with cream cheese, and often garnished with tomato, onion, cucumber, and capers. Etymology The American English word ''lox'' is a borrowing of Yiddi ...

and

kerosene Kerosene, or paraffin, is a combustibility, combustible hydrocarbon liquid which is derived from petroleum. It is widely used as a fuel in Aviation fuel, aviation as well as households. Its name derives from the Greek (''kērós'') meaning " ...

in an oxidizer-rich staged combustion cycle. A high efficiency/high thrust environmental-friendly rocket engine was always an objective within Programme 863. Development began in the 2000s, along with its sibling, the bigger

YF-100 The YF-100 is a Chinese liquid rocket engine burning LOX and kerosene in an oxidizer-rich staged combustion cycle. Development of the engine began in the 2000s, along with its sibling, the smaller YF-115, which would power the upper stages of ...

, which would power the LM-5, LM-6 and LM-7 boosters and first stages. Testing was directed by the China National Space Administration (CNSA) commencing in 2005. Development works are mainly carried out by the Xi'an Aerospace Propulsion Institute. It is used as the upper stage engine for China's next generation of medium and light environmental-friendly launch vehicles, namely the

Long March 6 The Long March 6 () or Chang Zheng 6 as in pinyin, abbreviated LM 6 for export or CZ 6 within China, is a Chinese liquid-fuel rocket, liquid-fuelled launch vehicle of the Long March (rocket family), Long March family, which was developed by t ...

and the

Long March 7 The Long March 7 (), or Chang Zheng 7 in pinyin, abbreviated LM-7 for export or CZ-7 within China, originally Long March 2F/H or Chang Zheng 2F/H, nicknamed Bingjian (), is a Chinese liquid-fuelled launch vehicle of the Long March family, dev ...

. During early 2012, the engine system successfully passed vacuum testing. It is China's first upper stage rocket engine to adopt the staged-combustion cycle. In the LM-6 upper stage it will use a single YF-115 with gimbaled mount. While the LM-7 upper stage will use four such engines. But in this latter case, two engines will be fixed and two will be gimbaled. The newest rocket in the Long March series, the

Long March 12 The Long March 12 (), or Chang Zheng 12 as in pinyin, abbreviated LM-12 for export or CZ-12 within China, is a Chinese medium-lift launch vehicle carrier rocket. The manufacturer is Shanghai Academy of Spaceflight Technology. It is capable of pla ...

, uses two YF-115 engines in its second stage.

References

Rocket engines of China Rocket engines using kerosene propellant Rocket engines using the staged combustion cycle {{rocket-stub

See also

References