Enhanced Plasma Current Collection from Weakly Conducting Solar Array Blankets PDF Download
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Author: G. Barry Hillard
Publisher:
ISBN:
Category :
Languages : en
Pages : 24
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Author: G. Barry Hillard
Publisher:
ISBN:
Category :
Languages : en
Pages : 24
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722204129
Category :
Languages : en
Pages : 26
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Among the solar cell technologies to be tested in space as part of the Solar Array Module Plasma Interactions Experiment (SAMPIE) will be the Advanced Photovoltaic Solar Array (APSA). Several prototype twelve cell coupons were built for NASA using different blanket materials and mounting techniques. The first conforms to the baseline design for APSA which calls for the cells to be mounted on a carbon loaded Kapton blanket to control charging in GEO. When deployed, this design has a flexible blanket supported around the edges. A second coupon was built with the cells mounted on Kapton-H, which was in turn cemented to a solid aluminum substrate. A final coupon was identical to the latter but used germanium coated Kapton to control atomic oxygen attack in LEO. Ground testing of these coupons in a plasma chamber showed considerable differences in plasma current collection. The Kapton-H coupon demonstrated current collection consistent with exposed interconnects and some degree of cell snapover. The other two coupons experienced anomalously large collection currents. This behavior is believed to be a consequence of enhanced plasma sheaths supported by the weakly conducting carbon and germanium used in these coupons. The results reported here are the first experimental evidence that the use of such materials can result in power losses to high voltage space power systems. Hillard, G. Barry Glenn Research Center RTOP 506-48-2B...
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Category : Aeronautics
Languages : en
Pages : 1134
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Category : Aeronautics
Languages : en
Pages : 492
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Category : Government publications
Languages : en
Pages :
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Category : Government publications
Languages : en
Pages : 1064
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Category : Research
Languages : en
Pages : 1794
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Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
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Category : Science
Languages : en
Pages : 1802
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Author: G. Barry Hillard
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Category :
Languages : en
Pages : 12
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Author:
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Category : Aeronautics
Languages : en
Pages : 686
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