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Operational status of the space test program P78-2 spacecraft and payloadsOperations of the P78-2 spacecraft and its 12 payloads, which attempt to measure the buildup and breakdown of charge on various spacecraft components and to characterize the natural environment at synchronous altitudes, are summarized. Launch procedures, orbit alignment, and eclipse seasons are reviewed. The spacecraft configuration and subsystems are described. Catastrophic payload failures are reported: the SC6 (AFGL Thermal Plasma Analyzer) failed due to an excessive power draw in the electron step generator. The SC7 (NASA/MSFC Light Ion Mass Spectrometer) internal power supply failed. Lesser payload failures, including SC2 probe biasing, SC4-1 pulsed mode, and SC4-2 neutralizer are discussed.
Document ID
19820006365
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Osgood, R. N.
(Air Force Space Div. Los Angeles, CA, United States)
Date Acquired
August 10, 2013
Publication Date
October 1, 1980
Publication Information
Publication: NASA. Lewis Research Center Spacecraft Charging Technol., 1980
Subject Category
Spacecraft Design, Testing And Performance
Accession Number
82N14238
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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