The Defence Research and Development Organisation (DRDO) has achieved a major technological breakthrough by successfully conducting a high-speed rocket-sled test of a fighter aircraft escape system at the Rail Track Rocket Sled (RTRS) facility in Chandigarh. The test validated multiple critical safety parameters, including canopy severance, ejection sequencing and complete aircrew recovery, the defence ministry said on Tuesday.
The ministry described the achievement as placing India in “an elite club of nations with advanced in-house escape system testing capability.”
Defence Minister Rajnath Singh congratulated the teams involved, calling the test a “significant milestone for India’s indigenous defence capability towards self-reliance.”
In a post on X, Singh’s office wrote: “DRDO has successfully conducted a high-speed rocket-sled test of fighter aircraft escape system at precisely controlled velocity of 800 km/h—validating canopy severance, ejection sequencing and complete aircrew-recovery at RTRS facility of TBRL, Chandigarh.”
Defence Research and Development Organization (DRDO) has successfully conducted a high-speed rocket-sled test of fighter aircraft escape system at precisely controlled velocity of 800 km/h- validating canopy severance, ejection sequencing and complete aircrew-recovery at Rail… pic.twitter.com/G19PJOV6yD
— रक्षा मंत्री कार्यालय/ RMO India (@DefenceMinIndia) December 2, 2025
What is the Rocket-Sled System and How it Works
A rocket-sled test simulates the conditions of a fighter aircraft in high-speed motion. The escape system is mounted on a sled propelled along twin rails using a sequence of solid propellant rocket motors. A senior official explained that the setup “simulates a moving aircraft in mid-air to evaluate real dynamic ejection conditions.”
The ministry noted that a dual-sled system with the forebody of the Light Combat Aircraft (LCA) was used during the trial. The sled was accelerated to precise velocities through phased firing to replicate real-time aerodynamic loads.
Aircrew Safety Validated With Instrumented Dummy
To verify life-saving functions, DRDO used an instrumented anthropomorphic test dummy that recorded critical accelerations, loads and moments expected during an actual aircrew ejection.
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According to the ministry, “the canopy fragilisation pattern, ejection sequencing and complete aircrew recovery process were simulated using the dummy,” with the entire sequence captured by onboard and ground imaging systems.
Officials from the Indian Air Force and the Institute of Aerospace Medicine witnessed the test, underscoring its operational importance for future indigenous fighter platforms.
‘More Complex Than Zero-Zero Tests’: Ministry
Calling dynamic ejection trials far more demanding than traditional static trials, the ministry said: “Dynamic ejection tests are significantly more complex than static tests such as ‘net test’ or ‘zero-zero test’, and the real measure for evaluating ejection seat performance.”
Department of Defence R&D Secretary and DRDO Chairman Samir V Kamat also congratulated the teams involved, noting that the test represents a crucial step forward for India’s next-generation aircraft safety systems.
