India’s national space agency has gotten the go-ahead to develop a semi-cryogenic engine capable of powering the country’s heaviest rocket. Once developed, the semi-cryogenic engine will increase the lifting capacity of the Geosynchronous Satellite Launch Vehicle Mk. 3 from its current 4 tons to 5 tons. The semi-cryogenic engine will replace supercooled liquid hydrogen with refined kerosene while retaining liquid oxygen as an oxidizer. Refined kerosene is cost-effective and ...


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