NEW DELHI: The Defence Bio-Engineering & Electro Medical Laboratory (DEBEL), a Bengaluru-based lab under DRDO, has successfully conducted high-altitude trials of the Indigenous Integrated Life Support System (ILSS) for the LCA Tejas aircraft. The trial, held on March 4, 2025, marks a significant step in Indiaโs self-reliance in aerospace technology.
The ILSS, based on On-Board Oxygen Generating System (OBOGS), provides pilots with a continuous supply of breathable oxygen, eliminating the need for traditional liquid oxygen cylinders. The system was rigorously tested on the LCA-Prototype Vehicle-3 of Hindustan Aeronautics Limited (HAL) and Aeronautical Development Agency (ADA). The tests included altitudes of up to 50,000 feet, high-G maneuvers, and other demanding flight conditions.
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Key performance evaluations covered:
- Oxygen concentration and demand breathing
- Availability of 100% oxygen
- Functionality under aerobatic maneuvers and high-G turns
- Performance of Anti-G Valve and Breathing Oxygen System (BOS) during taxiing, take-off, cruise, and landing
Following flight clearance from the Centre for Military Airworthiness & Certification (CEMILAC), the system met all required parameters. The ILSS integrates 10 Line Replaceable Units, including the Low-Pressure Breathing Regulator, BOS, Emergency Oxygen System, Oxygen Sensor, and Anti-G valve. This real-time oxygen generation system enhances pilot endurance and operational efficiency.
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Manufactured by L&T, the ILSS has 90% indigenous content, reinforcing Indiaโs Atmanirbhar Bharat initiative. The system can also be adapted for use in other aircraft like the MiG-29K.
This success was made possible through collaboration between DEBEL, ADA, HAL, CEMILAC, National Flight Test Center, Directorate General of Aeronautical Quality Assurance, and the Indian Air Force (IAF).
Defence Minister Rajnath Singh congratulated DRDO, IAF, and industry partners, stating that the achievement aligns with the vision of โViksit Bharat 2047โ and strengthens Indiaโs position in cutting-edge defence technology.
Dr. Samir V Kamat, Secretary of Defence R&D and Chairman DRDO, also praised the collaborative effort, highlighting the systemโs role in boosting Indiaโs aerospace capabilities.
