The 50N HPGP from ECAPS is a Spacecraft Thruster with Thrust 12.5 to 50 N, Thruster Mass 2.1 Kg, Specific Impulse 243 to 255 Sec, Propellant Mass 2.1 Kg, Inlet Pressure 0.5 to 2.6 Mpa. Tags: HPGP Thruster. More details for 50N HPGP can be seen below.