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  • 1
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    Evolutionary use of nuclear electric propulsion (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Evolving new propulsion technologies through a rational and conscious effort to minimize development costs and program risks while maximizing the performance benefits is intuitively practical. A phased approach to the evolution of nuclear electric propulsion from use on planetary probes, to lunar cargo vehicles, and finally to manned Mars missions with a concomitant growth in technology is considered. Technology levels and system component makeup are discussed for nuclear power systems and both ion and magnetoplasmadynamic thrusters. Mission scenarios are described, which include analysis of a probe to Pluto, a lunar cargo mission, Martian split, all-up, and quick-trip mission options. Evolutionary progression of the use of NEP in such missions is discussed.
    Keywords: SPACECRAFT PROPULSION AND POWER
    Type: AIAA PAPER 90-3821
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    Solar electric propulsion for Mars transport vehicles (1990)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Solar electric propulsion (SEP) is an alternative to chemical and nuclear powered propulsion systems for both piloted and unpiloted Mars transport vehicles. Photovoltaic solar cell and array technologies were evaluated as components of SEP power systems. Of the systems considered, the SEP power system composed of multijunction solar cells in an ENTECH domed fresnel concentrator array had the least array mass and area. Trip times to Mars optimized for minimum propellant mass were calculated. Additionally, a preliminary vehicle concept was designed.
    Keywords: SPACECRAFT PROPULSION AND POWER
    Type: NASA-TM-103234 , E-5654 , NAS 1.15:103234
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Nuclear electric propulsion mission performance for fast piloted Mars missions (1991)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: A mission study aimed at minimizing the time humans would spend in the space environment is presented. The use of nuclear electric propulsion (NEP), when combined with a suitable mission profile, can reduce the trip time to durations competitive with other propulsion systems. Specifically, a split mission profile utilizing an earth crew capture vehicle accounts for a significant portion of the trip time reduction compared to previous studies. NEP is shown to be capable of performing fast piloted missions to Mars at low power levels using near-term technology and is considered to be a viable candidate for these missions.
    Keywords: SPACECRAFT PROPULSION AND POWER
    Type: AIAA PAPER 91-3488
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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