DRDO’s Kaveri 2.0 Engine: India’s Tejas Mk1A Gets Indigenous Power

India’s Defence Research and Development Organisation (DRDO) is undertaking a critical structural redesign of its indigenous Kaveri jet engine, decoupling the revitalized Kaveri 2.0 project from heavier stealth-fighter engine plans. This strategic shift by DRDO’s Gas Turbine Research Establishment (GTRE) aims to counter global supply chain disruptions that have hampered foreign powerplant deliveries and local aircraft production.

The core development involves engineering a new 90-kilonewton (kN) engine specifically to replace imported powerplants in the Indian Air Force’s frontline fighters during their mid-life upgrades. This move underscores a broader effort towards greater self-reliance in critical defense technology.

Core Design & Performance Targets

The Kaveri 2.0 represents a fundamental architectural shift, targeting performance metrics comparable to existing foreign engines. GTRE is completely rebuilding the engine core to achieve these goals.

• Dry Thrust: 55kN to 60kN
• Maximum Wet Thrust (with afterburner): 90kN to 100kN
• Performance Match: American-made General Electric F404 engines currently in the Tejas Mk1A

This overhaul focuses on a redesigned High-Pressure Compressor (HPC) to boost pressure ratios and fuel efficiency. Further enhancements include single-piece blisks crafted from advanced titanium alloys for reduced weight and improved thrust-to-weight ratio, alongside single-crystal turbine blades designed for higher operating temperatures and thermal efficiency.

Strategic Independence & Future Applications

Developing an indigenous 90kN engine holds immense strategic importance for the Indian Air Force. It provides a crucial domestic alternative when the current GE F404 engines require replacement in the 2030s.

This initiative significantly reduces reliance on foreign hardware and mitigates international supply chain risks. Furthermore, parts of the Kaveri technology are already operational, with a dry, non-afterburning variant powering DRDO’s Ghatak stealth unmanned combat aerial vehicle (UCAV).

The 90kN Kaveri 2.0 core is part of a two-pronged strategy, as GTRE is also co-developing a more powerful 120kN to 140kN engine with French aerospace firm Safran for the fifth-generation Advanced Medium Combat Aircraft (AMCA).

Key Performance Targets

• Dry Thrust: 55kN to 60kN
• Maximum Wet Thrust (with afterburner): 90kN to 100kN
• Performance Match: American-made General Electric F404 engines currently in the Tejas Mk1A

This indigenous engine development marks a significant step towards India’s long-term defense self-sufficiency, ensuring operational continuity for its fighter fleet.