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Microcosm 22N

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Status: Hardware. Date: 2000-2004. Thrust: 22.25 kN (5,002 lbf).

Microcosm was developing a family of liquid-propellant rocket engines for its Scorpius series of ELVs and other users. The company has built a pressure-fed, ablatively cooled, 22,250-newton thrust engine using liquid oxygen and jet fuel as propellants. This engine was successfully tested on the company's SR-S and SRXM-1 sounding rockets launched in January 1999 and March 2001. The engine would also be used as the upper stage engine for the Sprite Mini-Lift orbital vehicle should that vehicle move into final development.

Propellant Formulation: Lox/Jet A.