| 词条 | YF-100 |
| 释义 |
|name = YF-100 |image =File:CASC YF-100K rocket engine.jpg |image_size = |caption =YF-100K display at Airshow China 2018 |country_of_origin= China |date = |first_date = Long March 6 inaugural flight (2015-09-20) |last_date = |designer =Academy of Aerospace Liquid Propulsion Technology |manufacturer = |purpose = |associated = Long March 5, Long March 6 and Long March 7 |predecessor = RD-120 |successor = |status = In service |type =liquid |oxidiser =LOX |fuel =RP-1 |mixture_ratio =2.6 (±10%) (adjustable) |cycle =Oxidizer-rich staged combustion cycle |pumps = |description = |combustion_chamber=1 |nozzle_ratio =35 |thrust = |thrust_at_altitude= |thrust(Vac) ={{convert|1340|kN|lbf|abbr=on}} |thrust(SL) ={{convert|1200|kN|lbf|abbr=on}} |throttle_range =65%~100% |thrust_to_weight= |chamber_pressure={{convert|18|MPa|abbr=on}} |specific_impulse= |specific_impulse_vacuum={{convert|335|isp}} |specific_impulse_sea_level={{convert|300|isp}} |total_impulse = |burn_time =155 s (estimated) |restarts = |gimbal = |capacity = |dimensions = |length = |diameter = {{convert|1.338|m|in}} |dry_weight = |used_in =Long March 5 K-3-1 and K-2-1 boosters, Long March 6 first stage and Long March 7 first stage and boosters. |references =[1][2][3][4][5][6] |notes = }} The YF-100 is a Chinese liquid rocket engine burning LOX and kerosene in an oxidizer-rich staged combustion cycle.[1] Development of the engine began in the 2000s, along with its sibling, the smaller YF-115, which would power the LM-6 and LM-7 upper stages.[8][9][10] 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. The engine had its first 300 seconds test fire on November 2007.[11] A high efficiency/high thrust environmentally-friendly rocket engine was always an objective within Programme 863 in the 1980s; however, Chinese industry was not mature enough at that time to produce such a rocket until they obtained RD-120 in the early 1990 from Russia following the collapse of the USSR.[8] It is the first Chinese rocket engine to adopt the staged-combustion cycle and the most powerful to date. During July 2012 the engine fired for 200 seconds generating {{convert|120|tonne|lb|abbr=on}} of thrust.[13] On May 28, 2012, the National Defense Science and Industry Bureau certified the engine.[14] The engine is designed for use on the first stage of the Chinese government's next generation of launch vehicles, the Long March 5, the Long March 6 and the Long March 7.[8][9][10] The engine's maiden flight, on the Long March 6, took place on September 20, 2015. Technical DescriptionThe YF-100 is a pump-fed oxidizer rich staged combustion rocket engine. It has adjustable thrust and variable mixture ratio. Its preburner burns all the LOX mass flow with a bit of kerosene to generate hot gas that powers the single turbine. The turbopump is a single-shaft design, with a single-stage oxygen pump and a dual-stage kerosene pump driven by the same turbine. It also has two low pressure pumps that prevent cavitation. This arrangement is very similar to the RD-170 design. The engine has a heat exchanger to heat oxygen gas for LOX tank pressurization, and also supplies high pressure kerosene as hydraulic fluid for the thrust vector control actuators.[3] 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.[14][3] VersionsAt least three different versions are known to exist.
See also
References1. ^1 2 3 {{cite web|url=http://baike.baidu.com/view/10271187.htm |title=YF-100 |language=Chinese |accessdate=2015-07-02}} [1][2][3][4][5][6][7][8][9][10][11][12]2. ^1 {{cite web|url=http://www.chinanews.com/news/2005/2005-11-09/8/649189.shtml |title=中国新型120吨液氧煤油火箭发动机已经试车成功 |trans-title=China's new 120 tons of liquid oxygen kerosene rocket engine has been successfully fired |date=2005-11-09 |language=Chinese |accessdate=2015-07-02}} 3. ^1 {{cite web|url=http://www.flightglobal.com/news/articles/china-completes-longest-hot-fire-engine-test-for-long-march-5-core-374900/ |title=China completes longest hot-fire engine test for Long March 5 core stage |author=Zach Rosenberg |publisher=Flightglobal - Aviation Connected |date=2012-07-30 |accessdate=2015-07-02}} 4. ^1 {{cite web|url=http://space.skyrocket.de/doc_lau/cz-5.htm |title=CZ-5 (Chang Zheng-5) |publisher=Gunter's Space Page |author=Gunter Dirk Krebs |accessdate=2015-07-02}} 5. ^1 {{cite web|url=http://space.skyrocket.de/doc_lau/cz-6.htm |title=CZ-6 (Chang Zheng-6) |publisher=Gunter's Space Page |author=Gunter Dirk Krebs |accessdate=2015-07-02}} 6. ^1 {{cite web|url=http://space.skyrocket.de/doc_lau/cz-7.htm |title=CZ-7 (Chang Zheng-7) |publisher=Gunter's Space Page |author=Gunter Dirk Krebs |accessdate=2015-07-02}} 7. ^1 2 {{cite web|url=http://www.spacechina.com/n25/n144/n206/n214/c239970/content.html |title=120吨级液氧煤油发动机项目验收 |trans-title=120-ton liquid oxygen kerosene engine project acceptance |publisher=CASC |language=Chinese |date=2012-06-01 |accessdate=2015-07-02}} 8. ^1 2 3 {{cite web |url=http://sinodefence.com/rocketry/changzheng-5/ |title=Chang Zheng-5 (Long March-5) |publisher=SinoDefence |accessdate=2015-07-02 |deadurl=yes |archiveurl=https://web.archive.org/web/20150703044121/http://sinodefence.com/rocketry/changzheng-5/ |archivedate=2015-07-03 |df= }} 9. ^1 2 {{cite web|url=http://sinodefence.com/rocketry/cz-6/ |title=Chang Zheng-6 (Long March-6) |publisher=SinoDefence |accessdate=2015-07-02}} 10. ^1 2 {{cite web|url=http://sinodefence.com/rocketry/cz-7/ |title=Chang Zheng-7 (Long March-7) |publisher=SinoDefence |accessdate=2015-07-02}} 11. ^1 {{Cite web|url=http://www.shenkong.net/Explore/1410/ZGXYDYYMYFDJ3-YF100-115ZYTX26045110.htm|title=中国新一代液氧煤油发动机3：YF100/115主要特性 - 深空网|website=www.shenkong.net|language=Chinese|access-date=2016-04-11|deadurl=yes|archiveurl=https://web.archive.org/web/20160304055915/http://www.shenkong.net/Explore/1410/ZGXYDYYMYFDJ3-YF100-115ZYTX26045110.htm|archivedate=2016-03-04|df=}} 12. ^1 2 {{cite web|url=http://spacepac.org/wp/china/chinese-yf-100-russian-rd-120-to-power-cz-5 |title=Chinese YF-100 (Russian RD-120) to Power CZ-5 |publisher=SPACEPAC, The Space Public Affairs Committee |accessdate=2015-07-02}} }} External links
3 : Rocket engines of China|Rocket engines using kerosene propellant|Rocket engines using the staged combustion cycle |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。