Semi-Cryogenic Engine

Semi-Cryogenic Engine

• The Indian Space Research Organisation on Wednesday successfully carried out the first test of a semi-cryogenic engine at the newly commissioned Semi-cyrogenic Integrated Engine and Stage Test Facility at the ISRO Propulsion Complex (IPRC) in Mahendragiri, Tirunelveli district. 
• It was the first integrated test on an intermediate configuration of the 2000kN semi-cryogenic engine.

https://www.researchgate.net/figure/Comparison-of-mass-estimation-relationships-of-semi-cryogenic-and-storable-propellant_fig4_279711349

 Semi-Cryogenic Engines

• Semi-cryogenic engines are a type of rocket engine that use a combination of liquid and gaseous propellants. They are called “semi-cryogenic” because they operate at temperatures higher than cryogenic engines but still colder than traditional liquid rocket engines. 
• A semi-cryogenic engine uses refined kerosene instead of liquid hydrogen. Liquid oxygen is used as an oxidizer.
• The Semi Cryogenic Propulsion System Project envisages the design and development of a 2000 kN semi-cryogenic engine and ‘SC120 stage’ that will enable the development of a heavy-lift capability for future Indian space transportation systems.

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