Xian WS-15

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Type Turbofan
National origin People's Republic of China
Manufacturer Xi'an Aero-Engine Corporation
Designed by Shenyang Aeroengine Research Institute
First run 2006[1]
Major applications Chengdu J-20
Number built In production[2]

The WS-15 (Chinese: 涡扇-15; pinyin: Wōshàn-15), codename Emei, is a Chinese afterburning turbofan engine designed by the Shenyang Aeroengine Research Institute and manufactured by the Xi'an Aero-Engine Corporation, which will be used to power the Chengdu J-20,[1] which would be able to achieve supercruise.

Design and development[edit]

Development of the WS-15 afterburning turbofan engine began in the early 1990s.[1] In 2005, the engine performed successfully on the testbed. In 2009, it was known that the prototype was able to achieve 160 kilonewtons (36,000 lbf) and a thrust-to-weight ratio of 9.[3] The thrust target was reported as 180 kilonewtons (40,000 lbf) in 2012.[4]The new engine is speculated to incorporate two-plane thrust vectoring nozzles. As of now, the only in-service, in-production fighter jets using this technology is the Sukhoi Su-35 and Sukhoi Su-30MKI. This feature allows the aircraft to produce thrust vectoring moments about all three rotational axes, pitch, yaw and roll.



General characteristics

  • Type: Afterburning turbofan
  • Length: 5.05m
  • Diameter: 1.02m
  • Dry weight:


  • Compressor: 3-stage low-pressure, 6-stage high-pressure compressor
  • Combustors: annular
  • Turbine: 1-stage high-pressure, 1-stage low pressure(counter-rotating)


  • Maximum thrust:
    Military thrust: 105 kN
    Afterburner: 180+ kN
    Goal: 197 kilonewtons (44,000 lbf) with afterburner[4]
  • Turbine inlet temperature: 1850K
  • Thrust-to-weight ratio: 9.7-10.87

See also[edit]

Comparable engines


  1. ^ a b c Fisher, Richard (27 May 2015). "ANALYSIS: Can China break the military aircraft engine bottleneck?". Flightglobal. Retrieved 28 May 2015.
  2. ^ https://sputniknews.com/world/201809051067783616-china-improve-engine-mass-production-J-20/
  3. ^ Fisher, Richard, Jr. (30 December 2009). "October Surprises In Chinese Aerospace". International Assessment and Strategy Center. Archived from the original on August 13, 2015. Retrieved 28 May 2015. Cite uses deprecated parameter |deadurl= (help)
  4. ^ a b China Aerospace Propulsion Technology Summit (PDF), Galleon (Shanghai) Consulting, 2012, p. 2, archived from the original (PDF) on 8 December 2013, retrieved 28 May 2015
  5. ^ "Deterring China's Fighter Build-Up". Defense News. 19 November 2012. Retrieved February 19, 2017.

External links[edit]