Result of rocket engine research (cont)

• Engine propellant Rocket thrust (KN) Isp(sec)

• SRM solid Titan 3 5-1/2 6227 265.2

• LR-87-AJ-5 Aerozine Aerojet 1913 259

• LR-91-AJ-5 Aerozine Titan stage 2 444 312

• RL10A-3-3A liquid H2 Atlas 73.4 444.4

• Upper Orbit Engines

• IUS SRM-1 solid GTO injection(Boeing) 185.1 295.5

• IUS SRM-2 solid inject to GEO(Boeing) 78.41 289.1

• ORBUS 21 solid GTO injection(UT) 195.7 295.5

• ORBUS 21 solid inject to GEO(UT) 80.95 303.5

Notes: