Gesichtspunkt - 2 Angebote vergleichen
Bester Preis: € 18,91 (vom 03.04.2015)1
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Gesichtspunkt (2005)
EN PB NWISBN: 9781234152321 bzw. 1234152320, in Englisch, RareBooksClub, Taschenbuch, neu.
Von Händler/Antiquariat, BuySomeBooks [52360437], Las Vegas, NV, U.S.A.
This item is printed on demand. Paperback. 60 pages. Original publisher: Cleveland, Ohio : Glenn Research Center, Ohio Aerospace Institute, National Aeronautics and Space Administration, 2005 OCLC Number: (OCoLC)654818261 Subject: Solar sails -- Testing -- Congresses. Excerpt: . . . Safe current-power levels to avoid a molten metal hazard with connector pins are less than 3-amp per pin and less than 180-watt per pin ( Refs. 6 and 7 ). To avoid SAW electrostatic discharge ( ESD ) trigger arcs to the space plasma, negative solar cell voltage must not exceed-200-volts ( Refs. 8 and 9 ). To avoid SAW cell-to-cell sustained arcs, solar cell-to-cell differential voltage times the string current capacity must not exceed 40-watts for closely spaced cells ( gap - 3 size of 1. 0 10 m ). Safe current-voltage levels to avoid human shock are less than 32-volt and less than 0. 001-amp ( Refs. 6, 7, and 10 ). 3. 0 Test Plan 3. 1 Test Articles Six available ISS silicon solar cells ( Spectrolab k6700B ) ( Ref. 11 ) were used in LILT testing ( Fig. 5 ). Each cell was marked with a serial number and a grade level for traceability. Three of these were grade 5 cells ( serial numbers 2532, 2570, 2574 ) and three were grade 8 cells ( serial numbers 3055, 3060, 3193 ). After manufacture, solar cells are graded 1 to 11 by the current level produced at a 0. 495-volt operating voltage. The SAW specification calls for the SAW circuits to have an average grade level of 7 or above. These individual cells were obtained from spare Photovoltaic Panel Modules ( PPMs ) from the US-Russian Mir Cooperative Solar Array ( MCSA ) program ( Refs. 12 and 13 ). ISS solar array technology panels, with 80 series-connected solar cells mounted to a flexible Kapton-scrim composite panel material, were also used in LILT testing. For example, panel 1083, manufactured by Lockheed-Martin, is a grade 7 spare PPM unit from the MCSA program. Figure 6 shows an electrical schematic and photographs of the PPM 1083 test article. Figure 5. - 8 by 8-cm Spectr. . . This item ships from La Vergne,TN.
This item is printed on demand. Paperback. 60 pages. Original publisher: Cleveland, Ohio : Glenn Research Center, Ohio Aerospace Institute, National Aeronautics and Space Administration, 2005 OCLC Number: (OCoLC)654818261 Subject: Solar sails -- Testing -- Congresses. Excerpt: . . . Safe current-power levels to avoid a molten metal hazard with connector pins are less than 3-amp per pin and less than 180-watt per pin ( Refs. 6 and 7 ). To avoid SAW electrostatic discharge ( ESD ) trigger arcs to the space plasma, negative solar cell voltage must not exceed-200-volts ( Refs. 8 and 9 ). To avoid SAW cell-to-cell sustained arcs, solar cell-to-cell differential voltage times the string current capacity must not exceed 40-watts for closely spaced cells ( gap - 3 size of 1. 0 10 m ). Safe current-voltage levels to avoid human shock are less than 32-volt and less than 0. 001-amp ( Refs. 6, 7, and 10 ). 3. 0 Test Plan 3. 1 Test Articles Six available ISS silicon solar cells ( Spectrolab k6700B ) ( Ref. 11 ) were used in LILT testing ( Fig. 5 ). Each cell was marked with a serial number and a grade level for traceability. Three of these were grade 5 cells ( serial numbers 2532, 2570, 2574 ) and three were grade 8 cells ( serial numbers 3055, 3060, 3193 ). After manufacture, solar cells are graded 1 to 11 by the current level produced at a 0. 495-volt operating voltage. The SAW specification calls for the SAW circuits to have an average grade level of 7 or above. These individual cells were obtained from spare Photovoltaic Panel Modules ( PPMs ) from the US-Russian Mir Cooperative Solar Array ( MCSA ) program ( Refs. 12 and 13 ). ISS solar array technology panels, with 80 series-connected solar cells mounted to a flexible Kapton-scrim composite panel material, were also used in LILT testing. For example, panel 1083, manufactured by Lockheed-Martin, is a grade 7 spare PPM unit from the MCSA program. Figure 6 shows an electrical schematic and photographs of the PPM 1083 test article. Figure 5. - 8 by 8-cm Spectr. . . This item ships from La Vergne,TN.
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Gesichtspunkt
EN USISBN: 9781234152321 bzw. 1234152320, in Englisch, General Books LLC, General Books LLC, General Books LLC, gebraucht.
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U.S. Government, Peter Schmid, Paperback, German-language edition, Pub by General Books LLC.
U.S. Government, Peter Schmid, Paperback, German-language edition, Pub by General Books LLC.
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