TQ-12

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TQ-12
Country of originChina
ManufacturerLandspace
StatusUnder development
Liquid-fuel engine
PropellantLiquid oxygen / Liquefied natural gas
Configuration
Nozzle ratio45
Performance
Thrust, vacuum745 kilonewtons (167,000 lbf) for sea level nozzle
785 kilonewtons (176,000 lbf) for vacuum nozzle
Thrust, sea-level658 kilonewtons (148,000 lbf)
Chamber pressure10.1 MPa (1,460 psi)
Specific impulse, vacuum337s
Specific impulse, sea-level284.5s
Dimensions
Measurement3.9m
Diameter1.5m
Used in
ZQ-2
References
Notes[1][2][3]

The TQ-12 (Chinese: 天鹊-12; pinyin: Tiānquè-12, lit. Sky Lark 12) is a gas-generator cycle rocket engine burning liquid methane and liquid oxygen under development by Landspace.[4] TQ-12 is the first Chinese liquid rocket engine developed with private funding.[5] The engine has been designed to produce 670 kilonewtons (150,000 lbf) of thrust at sea level.[6]

A TQ-12 engine during a hot firing test on May 14, 2020

History

The engine passed its first power pack test including the turbopump, valves, ignition components, and the gas generator at a LandSpace facility in Huzhou on March 25, 2019.[7] The engine's first full assembly was delivered in May 2019, and a hot fire test was successfully conducted the same month.[8][9] The engine passed its first 200 seconds variable thrust test on October 26, 2019. [10] Series of 400s hot fire tests were conducted in January 2021 and the first-stage engine assembly for LandSpace's Zhuque-2 rocket was completed in February 2021. It consists of four TQ-12 engines providing a takeoff thrust of 268 tons.[11] 37 TQ-12 family engines have been built by LandSpace as of July 31, 2022, with a hot fire test duration of more than 20,000 seconds. A record-breaking 3357 seconds of hot firing time were accumulated by one engine after it was started 11 times. In August 2022, Landspace successfully tested the improved TQ-12A. Compared with the original TQ-12, the engine thrust is increased by 9%, the specific impulse is increased by 40 m/s, and the weight is reduced by 100kg. [12]

References

  1. ^ "TQ-12 Engine". Landspace. Retrieved 4 March 2021.
  2. ^ ""天鹊"80吨液氧甲烷发动机100%推力100秒试车圆满成功". Weixin Official Account Platform. LandSpace. Retrieved 8 August 2022.
  3. ^ "突破推力调节技术 80吨液氧甲烷发动机200秒变推力试车成功". Weixin Official Account Platform. LandSpace. Retrieved 10 September 2022.
  4. ^ Jones, Andrew (16 May 2019). "Landspace assembles methalox engine, signs international agreements". SpaceNews. Retrieved 4 March 2021.
  5. ^ "LandSpace Technology Obtains More Millions for Rocket Development". Satnews Daily. Retrieved 4 March 2021.
  6. ^ Chen, Lan; Myrrhe, Jacqueline. "The Space Review: Will LandSpace be China's SpaceX?". www.thespacereview.com. Retrieved 4 March 2021.
  7. ^ Jones, Andrew (23 April 2019). "Landspace, iSpace and Linkspace of China claim progress on new launchers". SpaceNews.
  8. ^ Jones, Andrew (16 May 2019). "Landspace assembles methalox engine, signs international agreements". SpaceNews.
  9. ^ Nyirady, Annamarie (17 May 2019). "China's LandSpace Successfully Tests TQ-12 Engine - Via Satellite -". Via Satellite. Retrieved 8 August 2022.
  10. ^ "突破推力调节技术 80吨液氧甲烷发动机200秒变推力试车成功". Weixin Official Accounts Platform. LandSpace. Retrieved 8 August 2022.
  11. ^ Jones, Andrew (19 February 2021). "Landspace closes in on orbital launch with liquid methane rocket". SpaceNews.
  12. ^ "蓝箭航天天鹊80吨改进型发动机完成二次起动试车 - 科学探索". cnBeta.COM (in Chinese (China)). Retrieved 26 August 2022.
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