The MONARC-22-12 from Moog is a Spacecraft Thruster with a steady state thrust of 22 N (190 psia). This monopropellant thruster has a specific impulse of 228.1 secs and a total impulse of 263,720 lbf-sec. It has a feed pressure range of 4.8-27.6 bar and a nozzle expansion ratio of 40:1. The thruster requires a valve power of 30 W and a has a minimum impulse bit of 526m N-sec. It has a mass of 0.69 kg and an engine length of 22.9 cm and an exit diameter of 5.3 cm. The MONARC-22-12 thruster has a long and successful heritage and its range of applications include earth observation and communication, space exploration, and missile defense.