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Tusaş Engine Industries

Tusaş Engine Industries (TEI; ) is an aerospace engine manufacturer and a design center for the production of engines and engine parts for commercial and military aircraft. It is based in Eskişehir, Turkey.[3][4]

TEI was founded in 1985 as a joint venture between Turkish Aerospace Industries (50.5%) and GE Aerospace (46.2%),[1] the Turkish Armed Forces Foundation,[5] and the Turkish Aeronautical Association(3.3%).[6][7]

History

The company started with component manufacturing for the General Electric F110 engines in the F-16 aircraft of the Turkish Air Force.[8] Since 2010, great importance has been given to domestic design and a large amount of resources have been allocated. TEI designed 13 engines in a 10-year period between 2014 and 2024. Flights were carried out with 7 of these engines. 6 of them entered mass production.[9] TEI is developing Türkiye's first turbofan engine, TEI-TF6000. The company's long-term goal is for Türkiye to become a self-sufficient country in the field of aviation engines.

TEI's employee count was 1,200 in 2014. This number increased to 4,000 in 2025. In 2014, 70 percent of employees were blue-collar. By 2025, 57 percent of employees were white-collar. In 2024, the company achieved $400 million worth of exports.[2] In 2025, the company announced that it would produce the TF-35000, which will be the engine for Türkiye's domestically produced TAI Kaan fighter jet.[10]

Products and projects

Indigenous engines

  • TEI-PD170 turbodiesel aviation engines for the TAI Anka UAVs[11][12][13][14]
  • TEI-PD222ST turbodiesel aviation engine[15]
  • TEI-PG50 2-stroke gasoline aviation engine[16]
  • TEI-PG50S 2-stroke gasoline aviation engine[17]
  • TEI-TJ300 turbojet medium range anti-ship missile engine[18]
  • TEI-TJ90 turbojet engine for UAVs, including TAI Şimşek target drone[19][20]
  • TEI-TJ35 turbojet engine[21]
  • TEI-TP38 turboprop engine[22]
  • TEI TS1400 turboshaft aviation engine for rotary wing applications such as the TAI T625 Gökbey, T-129 ATAK[23]
  • TEI TS3000 turboshaft aviation engine for rotary wing applications such as the TAI T925, TAI T929 ATAK 2[24]
  • TEI-TF6000 turbofan engine[25]
  • TEI-TF10000 turbofan engine[26]
  • TEI-TF35000 turbofan engine[27]

Licensed engines

  • General Electric T700 (T700-TEI-701D variant) for the T-70, a local variant of the S-70 Black Hawk[28][29][30]
  • General Electric F110 engines (Original Equipment Manufacturer)[31]
  • LHTEC T800 turboshaft engines for rotary wing applications such as the T-129 Atak[32][33]

Parts and modules

  • CFM International LEAP[34]
  • General Electric GEnx[35][36]
  • CFM International CFM56[37]
  • General Electric GE90[38]
  • General Electric GE9X[39]
  • General Electric T700 (T700-TEI-701D variant)[28]
  • Europrop TP400 (Engine of the Airbus A400M Atlas)[40]
  • Also for many other engines[41]

References

  1. "TEI:History ." TEI website.^
  2. TEI'nin bu yılki ihracat hedefi 450 milyon dolar Anadolu Agency, 6 February 2025, retrieved 2 October 2025^
  3. Official site of TEI www.tei.com.tr, Official site of TEI, retrieved 15 July 2021^
  4. About Us www.tei.com.tr, Official site of TEI, retrieved 10 August 2021^
  5. Turkish Armed Forces Foundation, TUSAS ENGINE INDUSTRIES INC. – TEI retrieved 2017-01-31^
  6. VERICUT probes aero engine machining efficiency retrieved 2017-01-25^
  7. Machinery - EOS process monitoring system completes pilot testing www.machinery.co.uk, 30 August 2016, retrieved 17 July 2021^
  8. F-16 Air Forces - Turkey www.f-16.net, retrieved 2021-07-17^
  9. Türk savunma sanayisi 10 yıla 13 havacılık motoru sığdırdı Anadolu Agency, 10 March 2024^
  10. Indigenous TF35000 engine to power Türkiye's 5th generation KAAN fighter jet Türkiye (newspaper), 17 May 2025, retrieved 2 October 2025^
  11. TEI-PD170 www.tei.com.tr, Tusaş Engine Industries (TEI), retrieved 15 July 2021^
  12. Janes | Latest defence and security news Janes.com, retrieved 2021-07-17^
  13. The Algemeiner. Analysis: Turkey's Fruitless Quest for Armed Drones Algemeiner.com^
  14. Turkey seeks to develop local engines for UAVs and tank - Latest News Hürriyet Daily News, 26 November 2013, retrieved 17 July 2021^
  15. TEI-PD222ST Tusaş Engine Industries (TEI), retrieved 15 July 2021^
  16. TEI-PG50 Tusaş Engine Industries (TEI), retrieved 15 July 2021^
  17. TEI-PG50S Tusaş Engine Industries (TEI), retrieved 15 July 2021^
  18. TEI-TJ300 Tusaş Engine Industries (TEI), retrieved 15 July 2021^
  19. TEI-TJ90 Tusaş Engine Industries (TEI), retrieved 15 July 2021^
  20. View topic - Turkish Engine Industries Develops first TurboJet Engine - Modern Military Aircraft www.f-16.net^
  21. TEI-TJ35 Tusaş Engine Industries (TEI), retrieved 15 July 2021^
  22. TEI-TP38 Tusaş Engine Industries (TEI), retrieved 15 July 2021^
  23. TEI-TS1400 Tusaş Engine Industries (TEI), retrieved 15 July 2021^
  24. TEI-TS3000 Defence Turkey, retrieved 18 September 2025^
  25. TEI-TF6000 Turbofan Engine Tusaş Engine Industries (TEI)^
  26. Milli Muharip Uçak için yerli motorda kritik süreç airporthaber.com, 2023-03-20, retrieved 2023-03-21^
  27. Okan GÜLEŞ. TUSAŞ’tan Milli Muharip Uçak açıklaması: 35 bin pound güçte motor yapabiliriz TGRT Haber, retrieved June 18, 2024^
  28. T700-TEI-701D Tusaş Engine Industries (TEI), retrieved 15 July 2021^
  29. Burak Ege Bekdil. New $3.5B Deal Paves Way for Turkish-made Black Hawks Defense News, August 8, 2017^
  30. Steps taken to support Saudi Arabia's defence industry efforts December 28, 2016^
  31. F110 Engine Tusaş Engine Industries (TEI), retrieved 15 July 2021^
  32. Dominic Perry. LHTEC aims for Turkish assembly of CTS800 engine Flight Global, 2016-05-13^
  33. Turkey keen on attack helicopter program despite snags - Latest News Hürriyet Daily News, 14 November 2013^
  34. LEAP www.tei.com.tr, retrieved 2021-07-15^
  35. GEnx www.tei.com.tr, retrieved 2021-07-15^
  36. GE and TAI Extend Tusas Engine Industries, Inc. Joint Venture for Another 25 Years GE Aviation, 29 January 2010^
  37. CFM56 www.tei.com.tr, retrieved 2021-07-15^
  38. GE90 www.tei.com.tr, retrieved 2021-07-15^
  39. GE9X www.tei.com.tr^
  40. TP400-D6 www.tei.com.tr, retrieved 28 March 2025^
  41. TEI - Other International Engine Programs TEI^