Encyclopedia entry HYSR-1 Stage · USA Part of HYSR Original archive entry. The text, images and links below are kept as they were written. LOx/Solid propellant rocket stage. Thrust 270.00 kN. RelatedFamilyHybridCountryUSALaunch VehiclesHYSRPropellantsLox/SolidStagesHYSR-1AgencyLMSC, Lockheed