DRDO tests indigenous ILSS for LCA Tejas at high altitude
DRDO’s Bengaluru-based Defence Bio-Engineering & Electro Medical Laboratory (DEBEL) successfully tested the Indigenous On-Board Oxygen Generating System (OBOGS)-based Integrated Life Support System (ILSS) for the LCA Tejas on March 4, 2025. The trials took place on the LCA-Prototype Vehicle-3, developed by Hindustan Aeronautics Limited (HAL) and the Aeronautical Development Agency (ADA).
The ILSS ensures pilots receive real-time oxygen without relying on traditional liquid oxygen cylinders. It enhances endurance and operational efficiency, supporting flights up to 50,000 feet while handling high-G maneuvers. The system integrates 10 key components, including the Low-Pressure Breathing Regulator, Emergency Oxygen System, Anti-G Valve, and Oxygen Sensor.
The trials assessed oxygen concentration, demand breathing, and system performance during aerobatic maneuvers, takeoff, cruise, and landing. Following clearance from the Centre for Military Airworthiness & Certification (CEMILAC), the system met all flight parameters.
L&T developed the ILSS as a Development cum Production Partner, with 90% indigenous content. The system can be adapted for other aircraft like the MiG-29K, boosting India’s self-reliance in aerospace technology.
Defence Minister Rajnath Singh praised DRDO, IAF, and industry partners, highlighting the achievement as a step toward ‘Viksit Bharat 2047.’ DRDO Chairman Dr. Samir V Kamat also commended the team for their efforts in advancing India’s defence technology.
