Why the IAF Initially Favored the Eurojet EJ200 for Tejas MkII

The Indian Air Force initially preferred the Eurojet EJ200 for the Tejas MkII due to strategic diversification and faster integration. However, increased aircraft weight and higher thrust needs led to the selection of the more powerful GE F414IN6 engine.

The Indian Air Force's (IAF) Tejas MkII program boasts a unique story regarding its engine selection. While the American-made GE F414IN6 now powers the aircraft, it wasn't always the IAF's top choice. Back in 2010, reports suggested the IAF preferred the European Eurojet EJ200 engine, the same one that propels the Eurofighter Typhoon. This preference stemmed from a strategic viewpoint:

• Diversification:  The IAF sought to avoid relying on a single foreign supplier, especially for a critical component like a fighter jet engine. Having two sources, the US (F414) and Europe (EJ200), would offer more leverage in negotiations, potentially securing better deals and maintenance support.

• Faster Integration: The EJ200's smaller size compared to the F414 offered a significant advantage. The Tejas MkII design wouldn't require major modifications to accommodate the EJ200. This potentially meant faster integration and less delay in the program's timeline.

However, the Tejas MkII program evolved:

• Weight Increase: The aircraft's weight grew from 14.5 tons to 17.5 tons. This additional weight necessitated a more powerful engine.

• F414's Advantage: The F414IN6 offered 8kN more thrust than the EJ200, a significant benefit for the heavier MkII.

These factors likely influenced the eventual selection of the F414IN6. Additionally, a technology transfer agreement with GE paves the way for potential future production of these engines within India, boosting domestic capabilities.

In conclusion, the IAF's initial preference for the EJ200 reflected a strategic desire for diversification and faster program progress. However, the evolving needs of the Tejas MkII and potential benefits from the F414IN6 ultimately led to the current engine selection.