India’s prolonged quest to build its own military jet engine has returned to the spotlight following a candid analysis by former DRDO Chairman Dr. V.K. Aatre in a recent discussion with Wing Commander (Retd.) Julie Rosy.
Their assessment makes it clear that the setbacks of the Kaveri engine project were not simply engineering mishaps, but symptoms of profound institutional and structural weaknesses within India's defence and aerospace ecosystem.
The Kaveri initiative, originally meant to power the Light Combat Aircraft (LCA) Tejas, fell short of its critical performance targets and was ultimately delinked from the fighter jet in 2008. Dr. Aatre observed that this separation was the result of long-standing systemic flaws rather than isolated technical glitches.
A primary flaw was an unbalanced approach to development. Historically, India heavily funded the construction of impressive research centres and testing laboratories.
While this gave the illusion of rapid momentum, experts note that such infrastructure cannot replace the vital, tedious work of incremental engineering, continuous prototyping, and parts refinement.
Furthermore, unlike other nations that mastered aviation technology by first reverse-engineering foreign designs, India's academic and research institutions largely skipped this foundational step. This gap in practical learning severely hindered the growth of indigenous design expertise.
Institutional silos also crippled progress. The Gas Turbine Research Establishment (GTRE) handled engine design, while Hindustan Aeronautics Limited (HAL) was tasked with production.
In successful global aerospace programmes, designers and manufacturers work hand-in-hand. In India, however, HAL focused almost exclusively on assembling foreign engines under licence, while GTRE designed the Kaveri with very little practical input from the manufacturing floor.
Material science posed another massive hurdle. Modern fighter engines endure extreme pressures and temperatures, demanding advanced components like single-crystal turbine blades, thermal barrier coatings, and nickel-based superalloys.
For decades, India lacked the domestic capability to produce these materials, leaving the country heavily reliant on foreign suppliers.
Additionally, the lack of specialised high-altitude testing infrastructure in India meant the Kaveri engine had to be shipped to Russia for crucial evaluations, which drastically inflated costs and delayed the process of identifying and fixing design flaws.
Today, however, the Ministry of Defence has adopted a radically different approach. Instead of trying to reinvent the wheel in isolation, India is actively securing strategic partnerships with global engine giants.
Recent developments in 2026 highlight this shift, as GE Aerospace and HAL have resolved key technical matters to co-produce the F414 jet engine in India.
This landmark agreement includes an 80% transfer of technology and aims to power the Tejas Mk2 and the initial prototypes of the Advanced Medium Combat Aircraft (AMCA) Mk1.
The Kaveri project has also found a new, more realistic purpose. Instead of being scrapped, a dry-thrust variant of the engine is currently being developed for the Ghatak Unmanned Combat Aerial Vehicle (UCAV), an application where thrust requirements are far lower than those of a supersonic fighter.
Looking towards the future, India is pushing for total self-reliance in heavy fighter propulsion.
For the future AMCA Mk2, New Delhi is evaluating competitive offers for a new 110-130 kN class engine. Both British firm Rolls-Royce and French aerospace major Safran have submitted proposals to co-develop this engine from scratch in India.
Crucially, these offers include full technology transfer and joint intellectual property (IP) ownership, which would allow India to upgrade and modify the engines natively without future external restrictions.
Finally, to break the historical monopoly of state-owned enterprises, the government is expanding the role of the private sector. Private aerospace firms are now actively participating in manufacturing advanced materials, critical subsystems, and precision components.
This shift is expected to build a robust, competitive domestic supply chain.
The decades spent on the Kaveri programme proved that building a modern combat engine is one of the most complex technological challenges any nation can face.
However, by embracing international co-development, integrating manufacturing with research, and empowering private industry, India’s current strategy shows that it has finally absorbed the hard lessons of the past.
