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Semi-cryogenic Engine

Facts for Prelims (FFP)

Source: TOI

 Context: An intermediate configuration of a 2000 kN semi-cryogenic engine was recently tested at a newly commissioned Semi-cryogenic Integrated Engine & Stage Test facility at ISRO Propulsion Complex (IPRC) in Mahendragiri, Tamil Nadu by ISRO.

  • It was the first in a series of tests planned to validate the design of a propellant feed system, including low-pressure and high-pressure turbo-pumps, gas generator, and control components.


About 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.