New Delhi, March 29, 2025.
India’s space exploration ambitions took a significant leap forward as the Indian Space Research Organisation (ISRO) successfully conducted the first major hot test of its 200T thrust semi-cryogenic engine. This landmark achievement enhances India’s rocket capabilities and paves the way for future advanced space missions.
The test was carried out at the ISRO Propulsion Complex (IPRC) in Mahendragiri, Tamil Nadu. This new semi-cryogenic engine, powered by a combination of Liquid Oxygen (LOX) and Kerosene, offers a massive thrust of 2000 kN. It is designed to replace the existing L110 liquid stage of the LVM3 rocket, significantly increasing its payload capacity from four tonnes to five tonnes in geostationary transfer orbit (GTO).
Unlike conventional liquid propulsion systems, the semi-cryogenic engine uses non-toxic, non-hazardous fuel, making it safer and more efficient. It operates on an oxidizer-rich staged combustion cycle, a highly advanced technology used by only a handful of space-faring nations. With a high chamber pressure of 180 bar and a specific impulse of 335 seconds, this engine promises better performance, improved efficiency, and greater reliability.
