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  • ELECTRONICS AND ELECTRICAL ENGINEERING  (2)
  • 2015-2019
  • 1995-1999
  • 1985-1989  (2)
  • 1945-1949
  • 1986  (2)
  • 1
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    Determining the influence and effects of manufacturing variables on sulfur dioxide cells (1986)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: A survey of the Li/SO2 manufacturing community was conducted to determine where variability exists in processing. The upper and lower limits of these processing variables might, by themselves or by interacting with other variables, influence safety, performance, and reliability. A number of important variables were identified and a comprehensive design experiment is being proposed to make the proper determinations.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: NASA. Goddard Space Flight Center The 1985 Goddard Space Flight Center Battery Workshop (date); p 67 - 74
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Three dimensional simulation of the operation of a hollow cathode electron emitter on the Shuttle orbiter (1986)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Several researchers have suggested using hollow cathodes as plasma contactors for electrodynamic tethers, particularly to prevent the shuttle orbiter from charging to large negative potentials. Previous studies have shown that fluid models with anomalous scattering can describe the electron transport in hollow cathode generated plasmas. An improved theory of the hollow cathode plasmas is developed and computational results using the theory are compared with laboratory experiment. Numerical predictions for a hollow cathode plasma source of the type considered for use on the shuttle are presented as are three-dimensional NASCAP/LEO calculations of the emitted ion trajectories and the resulting potentials in the vicinity of the orbiter. The computer calculations show that the hollow cathode plasma source makes vastly superior contact with the ionospheric plasma compared with either an electron gun or passive ion collection by the orbiter.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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