India’s Defence Bio-Engineering & Electro Medical Laboratory (DEBEL) has successfully carried out high-altitude trials of an Integrated Life Support System (ILSS) designed for the Light Combat Aircraft (LCA) Tejas fighter jet. This innovative system is based on an On-Board Oxygen Generating System (OBOGS), which generates and regulates oxygen for pilots during flights, eliminating the reliance on conventional liquid oxygen cylinder-based systems that are typically used in military aviation.
The testing for this advanced life support system occurred under a range of flight conditions on the LCA-Prototype Vehicle-3. Notably, the trials included operations at altitudes up to 50,000 feet (approximately 16,400 meters) and involved executing high gravitational (G) maneuvers. The Indian Ministry of Defence detailed that the performance evaluations focused on several crucial aspects, including oxygen concentration levels, demand breathing, and the consistent availability of 100% oxygen during various stages of flight.
The evaluation encompassed several flight scenarios such as aerobatic maneuvers at designated altitudes to conduct full functional testing of the anti-G valve, as well as assessments during taxiing, takeoff, cruising, G turns, and landing approaches.
Beyond the OBOGS, the ILSS is equipped with additional subsystems designed to bolster real-time oxygen generation, ultimately enhancing pilot endurance and operational effectiveness. These subsystems comprise a low-pressure breathing regulator, an emergency oxygen system, an oxygen sensor, and an anti-G valve, ensuring comprehensive support for pilots under various flight conditions.
DEBEL operates out of Bengaluru and is a part of India’s Defence Research and Development Organisation (DRDO). The ILSS has been manufactured by the Indian private firm Larsen & Toubro, serving as a critical production and development partner for DRDO in this project. Remarkably, the system boasts over 90% indigenous content and has the capability to be adapted for use in other aircraft, including the MiG-29K.
This significant advancement in life support technology not only enhances the safety and performance of Indian pilots but also underscores India’s growing self-reliance in defense technology and manufacturing.
