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Early results of the ATS-6 solar cell flight experimentThis paper presents preliminary ATS-6 solar-cell flight-experiment data through the first 247 days in synchronous orbit. The experiment is transmitting data on forty 2 x 2-cm solar cells representing 16 solar-cell configurations. The experiment is designed to study the effect of this orbit on select solar cells and cover-glass parameters such as solar-cell thickness and base resistivity, cover-glass thickness variation, new cover processes, and materials such as 7940 and 7070 integral covers as well as the FEP covers, the COMSAT 'violet' cell, and backside irradiation effects. The in-space solar-cell data indicate short-circuit currents are running higher by 1% to 8% than in measurements made with solar simulations; maximum power varied between -1% and +6%. Degradation of short-circuit current due to ultraviolet effects was determined to be about 2% after 50 days in orbit. All cells performed well through 247 days in orbit except the FEP-covered cells, which appear to have increased their rate of degradation during the eclipse season.
Document ID
19760031784
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Goldhammer, L. J.
(Hughes Aircraft Co. El Segundo, Calif., United States)
Corrigan, J. P.
(NASA Goddard Space Flight Center Greenbelt, Md., United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1975
Subject Category
Spacecraft Propulsion And Power
Meeting Information
Meeting: Photovoltaic Specialists Conference
Location: Scottsdale, AZ
Start Date: May 6, 1975
End Date: May 8, 1975
Accession Number
76A14750
Funding Number(s)
CONTRACT_GRANT: NAS5-11677
Distribution Limits
Public
Copyright
Other

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