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  • Spacecraft Design, Testing and Performance  (8)
  • Space Sciences (General)  (2)
  • Astronautics (General)  (1)
  • Computer Systems; Earth Resources and Remote Sensing  (1)
  • Ecology  (1)
  • 2015-2019  (13)
  • 11
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    NASA Update to WG-B: MMS GPS Performance at 29.34 Re (50% of Way to the Moon) (2019)
    In:  CASI
    Details
    Publication Date: 2019-08-14
    Description: NASA represents US civil space users at the United Nations International Committee on Global Navigation Satellite Systems (ICG). ICG Working Group B (WG-B) is responsible for Enhancement of GNSS Performance, New Services and Capabilities. The development and characterization of the GNSS Space Service Volume (SSV) is a key area of activity for NASA within WG-B. This presentation describes the MMS performance employing GPS at 50% of the way to the moon.
    Keywords: Astronautics (General)
    Type: GSFC-E-DAA-TN70096 , Meeting on Possible Further Work on the Long-term Sustainability of Outer Space Activities; Jun 11, 2019; Vienna; Austria
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 12
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    Status of NASA Research on Projectile Shape Effects-Impact Simulations (2019)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Numerical evaluation of a Whipple shield has yielded a ballistic model for cylindrical projectiles. A numerical model of a Whipple shield covered with a thermal-blanket that is representative of operational shields has been developed using CTH: The shield model has been evaluated against existing test data; The projectile model has been developed from preexisting models for graphite-epoxy materials. The model has been used to identify projectile characteristics at the ballistic limit for spherical and cylindrical projectiles; Considered normal impacts of the shield at 7 kilometers per second; Varied the angle between the axis-of-symmetry and velocity vector; Varied the length to the diameter ratio over a broad range. The results have been consolidated into a generalized model that can be adapted to existing spherical models
    Keywords: Spacecraft Design, Testing and Performance
    Type: JSC-E-DAA-TN68146 , Interagency Debris Cordination (IADC) Meeting; May 07, 2019 - May 10, 2019; Rome; Italy
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 13
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    IADC Vulnerability Report, IT32-13 (2016)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: This section provides hypervelocity impact test data for two types of batteries: Lithium-Ion (Li-Ion) and Nickel Hydrogen (Ni-H2) batteries. The impact tests were directed by the NASA Johnson Space Center Hypervelocity Impact Technology (HVIT) group in Houston Texas, and were performed at the NASA White Sands Test Facility (WSTF).
    Keywords: Spacecraft Design, Testing and Performance
    Type: JSC-CN-35651-2 , Meeting of the Inter-Agency Debris Coordination Committee; Mar 29, 2016 - Apr 01, 2016; Didcot; United Kingdom
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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