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UMPIRE Douglas
Part of American Mars Expeditions Family

UMPIRE Douglas

UMPIRE Douglas
Credit: © Mark Wade

American manned Mars expedition. Study 1964. Unfavorable Manned Planetary - Interplanetary Roundtrip Expedition profiles were studied under NASA Huntsville contracts to General Dynamics and Douglas in June 1963.

Status: Study 1964. Height: 96.00 m (314.00 ft). Diameter: 18.00 m (59.00 ft).

The studies looked at manned Mars missions at unfavorable mission opportunities (e.g. 1975, 1977). Douglas believed a nuclear-powered spacecraft, boosted in a single launch of Bono's ROMBUS booster, could take six crew on a 460 day mission to Mars even at unfavorable opportunities.

UMPIRE Douglas Mission Summary:

  • Summary: Nuclear thermal expedition designed for unfavorable launch opportunities.
  • Propulsion: Nuclear thermal
  • Braking at Mars: propulsive
  • Mission Type: opposition
  • Split or All-Up: all up
  • ISRU: no ISRU
  • Crew: 6
  • Outbound time-days: 200
  • Mars Stay Time-days: 30
  • Return Time-days: 230
  • Total Mission Time-days: 460
  • Total Payload Required in Low Earth Orbit-metric tons: 450
  • Mass per crew-metric tons: 75
  • Launch Vehicle Payload to LEO-metric tons: 450
  • Number of Launches Required to Assemble Payload in Low Earth Orbit: 1
  • Launch Vehicle: ROMBUS

Crew Size: 6.

Family: Mars Expeditions. Country: USA. Propellants: Nuclear/LH2. Agency: Douglas. Bibliography: 49, 591.



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