Minuteman III PSRE

Minuteman III Propulsion System Rocket Engine (PSRE), built by Bell Aerospace Corporation (now Aerojet Rocketdyne), provides the Minuteman III missile with postboost propulsion (both down-range and/or cross-range extension) and precise attitude and velocity adjustments. The PSRE consists of a gas storage assembly, two propellant storage assemblies containing a hypergolic mixture of nitrogen tetroxide as the oxidizer and monomethylhydrazine as the fuel, a gimbaled axial engine, 10 attitude-control engines, and the required interconnecting propellant manifold assemblies packaged within a cylindrical metal shell approximately 52 inches in diameter and 18.9 inches long. Production status: Flight proven
 
Aerojet Rocketdyne ICMB products support the missile defense mission as target vehicles. Aerojet Rocketdyne produces solid rocket motors for use in target launch vehicles which are integral to the development and testing of critical U.S. missile defense systems. The Aerojet Rocketdyne Flexseal Modified Minuteman SR19 Motor shown here is in production in Aerojet Rocketdyne's Sacramento, California facility.