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  • 1
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    A Review of Scientific and Technological Results from the TSS-1R Mission (1998)
    In:  CASI
    Details
    Publication Date: 2004-12-03
    Description: The Tethered Satellite System (TSS) program was designed to provide a unique opportunity to explore certain space plasma-electrodynamic processes and the orbital mechanics of a gravity-gradient stabilized system of two satellites linked by a long conducting tether. A unique data set was obtained during deployment which has allowed significant science to be accomplished. This paper focuses on results from the TSS-1R mission that are most important to the future technological applications of electrodynamic tethers in space, in particular, the current collection process. Of particular significance is an apparent transition of the physics of current collection when the potential of the collecting body becomes greater than the ram energy of the ionospheric atomic oxygen ions. Previous theoretical models of current collection were electrostatic, assuming that the orbital motion of the system, which is highly subsonic with respect to electron thermal motion, was unimportant. This may still be acceptable for the case of relatively slow-moving sounding rockets. However, the TSS-1R results show that motion relative to the plasma must be accounted for in orbiting systems.
    Keywords: Astronautics (General)
    Type: Tether Technology Interchange Meeting; 1-12; NASA/CP-1998-206900
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Micrometeorite Impact Test of Flex Solar Array Coupon (2016)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: No abstract available
    Keywords: Lunar and Planetary Science and Exploration
    Type: M16-5180 , 14SCT-0022 , Spacecraft Charging and Technology Conference; Apr 04, 2016 - Apr 08, 2016; Noordwijk; Netherlands
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
  • 3
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    Micrometeorite Impact Test of Flex Solar Array Coupon (2016)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Spacecraft with solar arrays operate throughout the near earth environment and are planned for outer planet missions. An often overlooked test condition for solar arrays that is applicable to these missions is micrometeoroid impacts and possibly electrostatic discharge (ESD) events resulting from these impacts. NASA Marshall Space Flight Center (MSFC) is partnering with Space Systems/Loral, LLC (SSL) to examine the results of simulated micrometeoroid impacts on the electrical performance of an advanced, lightweight flexible solar array design. The test is performed at MSFC's Micro Light Gas Gun Facility with SSL-provided coupons. Multiple impacts were induced at various locations on a powered test coupon under different string voltage (0V-150V) and string current (1.1A - 1.65A) conditions. The setup, checkout, and results from the impact testing are discussed.
    Keywords: Lunar and Planetary Science and Exploration
    Type: M16-5179 , Spacecraft Charging and Technology Conference; Apr 04, 2016 - Apr 08, 2016; Noordwijk; Netherlands
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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