Table VIII. Mission payload sensitivities Cargo mission Manned mission Chemica1 NTR NEP Chemical NTR NEP Lunar missions LLO separated mass/total mass at LEO 0.3160 0.3812 0.2990 0.2788 0.2123 N/A LEO return mass/total mass at LEO 0.0162 0.3578 0.5451 0.0758 0.2821 N/A Lunar surface usable payload/LLO separated mass 0.4247 N/A N/A 0.0000 N/A N/A LLO return mass/LLO separated mass 0.0000 N/A N/A 0.3948 N/A N/A Cargo mission Manned mission Chemical NTR NEP Chemical NTR NEP Mars missions Mars orbit separated mass/total mass at LEO 0.3756 0.4370 0.5340 0.3629 0.4098 0.6436 LEO return mass/total mass at LEO 0.0000 0.0000 0.2615 0.0691 0.1378 0.2627 Mars surface usable payload/Mars orbit SEP mass 0.5001 N/A N/A 0.0000 N/A N/A Mars orbit return mass/Mars orbit separated mass 0.0000 N/A N/A 0.1878 N/A N/A Status date: Jan 30, 1989 * Orbit separated mass includes delivered stages/propellants/aerobrakes, and orbital/surface usable payloads. * Surface usable payload includes only payload to remain on surface, excluding stages and aerobrakes. * Return mass includes all recoverable/reusable hardware.
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