Environmentally-induced discharges on solar arrays in geosynchronous orbit

An analysis into the conditions necessary for environmentally induced inverted voltage gradient discharges in geosynchronous satellite solar arrays is conducted. This analysis shows that fused silica coverglass arrays can discharge in encounters with high-current-density, moderate-energy substorms....

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Bibliographic Details
Published in:IEEE transactions on nuclear science 1993-12, Vol.40 (6), p.1525-1531
Main Authors: Stevens, N.J., Jones, M.R.
Format: Article
Language:English
Subjects:
Applied sciences
Dielectric substrates
Electronics
Exact sciences and technology
Extraterrestrial measurements
Guidelines
Military satellites
Optoelectronic devices
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Silicon compounds
Space technology
Space vehicles
Surface charging
Testing
Voltage
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Summary:An analysis into the conditions necessary for environmentally induced inverted voltage gradient discharges in geosynchronous satellite solar arrays is conducted. This analysis shows that fused silica coverglass arrays can discharge in encounters with high-current-density, moderate-energy substorms. Discharges can also occur in a relaxation phase of a standard design substorm environment. After six months in space, when the Kapton thermal blankets photodegrade to become quasi-conductive, only a very severe substorm environment encounter will produce the conditions necessary to trigger discharges. Analysis based on lumped element modeling of the spacecraft indicates that the structure ringing persists longer than the discharge pulse. Ceria doped coverglass arrays discharge only after Kapton thermal blankets age.< >
ISSN:0018-9499
1558-1578
DOI:10.1109/23.273509