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manned venus orbiting missionManned orbiting stopover round trips to Venus are studied for departure dates between 1975 and 1986 over a range of trip times and stay times. The use of highly elliptic parking orbits at Venus leads to low initial weights in Earth orbit compared with circular orbits. For the elliptic parking orbit, the effect of constraints on the low altitude observation time on the initial weight is shown. The mission can be accomplished with the Apollo level of chemical propulsion, but advanced chemical or nuclear propulsion can give large weight reductions. The Venus orbiting mission weights than the corresponding Mars mission.
Document ID
19670017910
Document Type
Technical Memorandum (TM)
Authors
Willis, E. A., Jr.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 2, 2013
Publication Date
January 1, 1967
Subject Category
Lunar and Planetary Science and Exploration
Report/Patent Number
NASA-TM-X-52311
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
LAUNCH DATE
PLANETARY SPACE FLIGHT
VENUS
ORBITAL CALCULATION
MANNED SPACE FLIGHT

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