Table VII. Mars cargo delivery mission—chemical propulsion Mars evolution mission #2 (cargo) Parametric sizing of stages, brakes Status date: Jan 30, 1989 Orbital sequential weights/performance Trans Mars injection stage—chemical I8p (sec): MPS: 460.0 RCS: 220.0 B/O rate (kg/day): 82.1 Reserves (%): MPS: 2 RCS: 10 Phobos cargo stage: 113119 Stage: 27162 (Propuls only) Mars cargo lander: 89 975 Total Mars P/L: 203 904 Sequential weight Delta V (M/S) Time MPS fluids RCS --------------------------------------- Mission event MPS RCS days boiloff Nominal fluids other kg lb Leo departure 540 700 1 192027 MPS Earth escape 3730 0 5 -411 -303954 0 -304364 671002 Detach Phobos cargo stage 0 0 0 0 0 0 —113119 —113119 249383 Detach Mars cargo lander 0 0 0 0 0 0 —89 975 —89 975 —198 359 MPS reserves 0 0 0 0 —6079 —6079 —13 402 End of mission, excluding reserves 27162 59 882 Total 3730 0 5 0 -410.5 -303 954 0 0 -209173 Fluid reserves —6079 0 Total usable fluid weight—kg Total usable fluid weight—lb -310444 0 -684 405 0 — Continued on p. 303
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