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UMPIRE Douglas

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UMPIRE Douglas
Credit: © Mark Wade

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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.