ThePrintPod: All about OBOGS, a life support system for IAF pilots that has cleared DRDO’s high altitude tests

Performance evaluation of ILSS included rigorous tests, such as oxygen concentration, demand breathing, availability of 100 percent oxygen & aerobatic manoeuvres at various altitudes.https://theprint.in/defence/all-about-obogs-a-life-support-system-for-iaf-pilots-that-has-cleared-drdos-high-altitude-tests/2535369/