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Laser-powered Martian roverTwo rover concepts were considered: an unpressurized skeleton vehicle having available 4.5 kW of electrical power and limited to a range of about 10 km from a temporary Martian base and a much larger surface exploration vehicle (SEV) operating on a maximum 75-kW power level and essentially unrestricted in range or mission. The only baseline reference system was a battery-operated skeleton vehicle with very limited mission capability and range and which would repeatedly return to its temporary base for battery recharging. It was quickly concluded that laser powering would be an uneconomical overkill for this concept. The SEV, on the other hand, is a new rover concept that is especially suited for powering by orbiting solar or electrically pumped lasers. Such vehicles are visualized as mobile habitats with full life-support systems onboard, having unlimited range over the Martian surface, and having extensive mission capability (e.g., core drilling and sampling, construction of shelters for protection from solar flares and dust storms, etc.). Laser power beaming to SEV's was shown to have the following advantages: (1) continuous energy supply by three orbiting lasers at 2000 km (no storage requirements as during Martian night with direct solar powering); (2) long-term supply without replacement; (3) very high power available (MW level possible); and (4) greatly enhanced mission enabling capability beyond anything currently conceived.
Document ID
19900000841
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Harries, W. L. (NASA Langley Research Center Hampton, VA, United States)
Meador, W. E. (NASA Langley Research Center Hampton, VA, United States)
Miner, G. A. (NASA Langley Research Center Hampton, VA, United States)
Schuster, Gregory L. (NASA Langley Research Center Hampton, VA, United States)
Walker, G. H. (NASA Langley Research Center Hampton, VA, United States)
Williams, M. D. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 6, 2013
Publication Date
July 1, 1989
Publication Information
Publication: Second Beamed Space-Power Workshop
Subject Category
Lasers And Masers
Accession Number
90N10157
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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