Kaveri Engine: Powering India's Sky-High Dreams

India.com

27-05-2025

Kaveri Engine
Every Republic Day, we cheer as our fighter jets zoom across the sky, showcasing India's strength. But here's a hard truth: the heart of those jets—the engine—is often made abroad. Imagine if we could power our planes with an engine built right here in India. That's what the Kaveri engine, developed by DRDO, promises. It's not just an engine; it's our shot at self-reliance, pride, and a stronger future. Why Kaveri Is a Game-Changer
The Kaveri engine, crafted by the Gas Turbine Research Establishment (GTRE) in Bengaluru under DRDO, began in the 1980s to power the Tejas fighter jet. Today, it's being adapted for unmanned drones like Ghatak, India's first stealth UCAV. This shift is critical because India still relies heavily on foreign engines from countries like the US or France. If those supplies are halted, our jets could be grounded. Kaveri aims to change that by making India self-reliant in defence aviation.
Beyond security, developing the Kaveri engine means more jobs for Indian engineers, better use of public funds, and a chance to become a global exporter of engine technology. It keeps defence secrets secure and builds valuable skills that can later be used in civilian aircraft, naval vessels, and drones. How Much Power Does Kaveri Produce?
The Kaveri engine is a turbofan engine—built to push aircraft at high speeds over long distances. It currently exists in two versions:
• Dry Variant (No Afterburner): Generates 49–51 kN of thrust—suitable for unmanned drones like Ghatak.
• With Afterburner (Kaveri 2.0): Expected to reach 73–75 kN, with recent upgrades adding an additional 29 kN through an afterburner system, bringing the total closer to 79 kN.
To compare, the Tejas jet requires more than 85 kN of thrust. The American GE F404 engine currently powering Tejas delivers about 84 kN. While Kaveri is already promising for drones, it still needs a boost to power fighter jets. Why Isn't Kaveri Ready Yet?
Creating a jet engine is one of the most difficult engineering tasks. Here's why Kaveri is still a work in progress:
1. Technical Challenges: The engine struggles with high internal temperatures, especially in the turbine area. These heat levels can damage components, and managing them requires advanced materials like single-crystal turbine blades—technologies still being mastered in India.
2. Testing Limitations: India lacks dedicated high-altitude testing facilities. As a result, Kaveri has been tested abroad, such as in Russia, where high-altitude tests once achieved only 48.5 kN—well below the desired 81 kN. This slows progress and increases costs.
3. Long Development Timeline: Initiated in 1989, the project faced multiple hurdles. International sanctions after India's 1998 nuclear tests disrupted collaboration. In 2008, the engine was officially delinked from the Tejas project due to low thrust output. Attempts to collaborate internationally, like with France's Snecma, also fell through.
4. Power Deficit: While the dry version suits drones, the thrust isn't enough for fighters. In-flight testing, now ongoing on a modified Ilyushin Il-76 aircraft, is helping refine the design and performance in real-world conditions. When Can We See Kaveri in Action?
India is taking a phased approach:
• For Drones (Ghatak UCAV): The dry variant is almost ready and is expected to power the Ghatak drone by 2026. Drones require less thrust and can benefit from Kaveri's current capabilities.
• For Fighter Jets (Tejas/AMCA): The afterburning version of Kaveri is being upgraded to meet the thrust needs of fighter jets. With adequate funding and technological progress, it may be ready for integration into aircraft like Tejas or the upcoming AMCA by the late 2020s or early 2030s. Industry estimates suggest that with ₹25,000 crore in funding, a 105 kN thrust engine could be achievable by 2030.
• For Other Platforms: Kaveri's technology is already powering a 12 MW marine gas turbine since 2008. By 2027–28, more applications for ships and other platforms may be realized.
Recently, the Defence Minister announced increased funding to speed up development. Private players such as Larsen & Toubro are also getting involved, proposing a 110 kN engine based on the Kaveri framework, which could be ready by the early 2030s if the project receives consistent support. Why India Must Keep Pushing Kaveri
Kaveri is more than a technological ambition—it's a national necessity. Here's why the effort must continue:
• Strategic Independence: Foreign engines are not always guaranteed. A homegrown engine ensures India's defence readiness under any circumstances.
• Economic Benefits: Building engines locally creates thousands of jobs, retains valuable capital within the country, and opens avenues for exports.
• National Confidence: Imagine a Republic Day flypast in 2030, where Indian-made Tejas and Ghatak aircraft roar across the sky powered by Kaveri engines—built in India, by Indians. That would be a defining moment of pride.
Public sentiment is increasingly in favour of greater investment in indigenous defence projects. Citizens, veterans, and engineers are calling for more action and attention from the government. With consistent effort, policy support, and industry participation, the Kaveri engine can become a global symbol of India's technological progress. The Sky Is Not the Limit
Today, Kaveri produces 49–51 kN of thrust, which is nearly ready for drones. With continued work, upgrades could soon push that to 79 kN and beyond, bringing us closer to a 105 kN-class engine. With stronger funding, testing infrastructure, and private-sector collaboration, India can transform Kaveri from a promising project into a powerhouse of aviation.
Let us dream, design, and deliver. Let us make Kaveri soar. Because when it flies, it carries the dreams of a billion Indians.