The Defence Bio-Engineering & Electro Medical Laboratory (DEBEL), a Bengaluru-based laboratory under the Defence Research and Development Organisation (DRDO), has successfully conducted high-altitude trials of the Indigenous On-Board Oxygen Generating System (OBOGS)-based Integrated Life Support System (ILSS) for the LCA Tejas aircraft.
A Major Milestone for India’s Aerospace Technology
Defence Minister Rajnath Singh congratulated DRDO, the Indian Air Force (IAF), Public Sector Undertakings (PSUs), and industry partners on this significant achievement. He emphasized that the successful development of the Indigenous ILSS reinforces India’s commitment to cutting-edge defence technologies and aligns with the vision of ‘Viksit Bharat 2047.’
Advanced Oxygen Generation System for Fighter Pilots
The OBOGS-based ILSS is a state-of-the-art system designed to generate and regulate breathable oxygen for pilots during flight. This technology eliminates the need for traditional liquid oxygen cylinder-based systems, enhancing efficiency, safety, and operational endurance.
The ILSS was rigorously tested on the LCA-Prototype Vehicle-3 aircraft, developed by Hindustan Aeronautics Limited (HAL) and the Aeronautical Development Agency (ADA). The trials subjected the system to extreme conditions, including:
- Altitudes of up to 50,000 feet above mean sea level
- High-G maneuvers
- Multiple aerobatic flight phases such as take-offs, cruises, G turns, and landings
Successful Testing and Aeromedical Standards Compliance
The ILSS trials evaluated critical performance parameters, including:
- Oxygen concentration levels
- Demand breathing mechanisms
- Availability of 100% oxygen during various flight phases
- Functionality of key components such as the Anti-G Valve and Breathing Oxygen System (BOS)
The system met all specified aeromedical standards, proving its reliability and efficiency. With clearance from the Centre for Military Airworthiness & Certification (CEMILAC), the ILSS has been deemed fully functional and ready for operational deployment.
Cutting-Edge Features of the Indigenous ILSS
The Integrated Life Support System comprises 10 Line Replaceable Units (LRUs), including:
- Low-Pressure Breathing Regulator
- Breathing Oxygen System (BOS)
- Emergency Oxygen System
- Oxygen Sensor
- Anti-G Valve
These components ensure real-time oxygen generation, significantly enhancing pilot endurance, safety, and combat effectiveness.
Boosting India’s Self-Reliance in Aerospace Technology
Manufactured by L&T as a Development cum Production Partner, the ILSS showcases an advanced collaboration between DRDO and Indian defence industries. Notably, the system has 90% indigenous content, reflecting India’s growing self-reliance in aerospace technology.
Additionally, with suitable modifications, the ILSS can be adapted for use in other fighter aircraft, such as the MiG-29K.
The successful high-altitude trials of the ILSS mark a significant breakthrough in India’s defence technology sector. By reducing dependence on imported life support systems, India has taken a major step toward self-sufficiency in fighter jet technology. As the LCA Tejas program advances, the integration of indigenous systems like the ILSS will play a pivotal role in strengthening India’s air combat capabilities and pilot safety.
