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  • ENERGY PRODUCTION AND CONVERSION  (2.381)
  • ASTRONOMY  (1.188)
  • 1975-1979  (3.568)
  • 1925-1929  (1)
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  • 1
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    Toward diffraction-limited seeing of dim astronomical objects from the Earth's surface using LIDAR (1977)
    In:  CASI
    Details
    Publikationsdatum: 2005-02-28
    Schlagwort(e): ASTRONOMY
    Materialart: Res. in the Space Sci., Vol. 2, No. 1; 12 p
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
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    Sensitivity of solar-cell performance to atmospheric variables. 2: Dissimilar cells at several locations (1976)
    In:  CASI
    Details
    Publikationsdatum: 2009-11-16
    Beschreibung: For abstract, see N77-26624.
    Schlagwort(e): ENERGY PRODUCTION AND CONVERSION
    Materialart: Terrest. Photovoltaic Meas., 2; p 259-270
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 3
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    Battery life test using reconditioning (1977)
    In:  CASI
    Details
    Publikationsdatum: 2006-06-18
    Beschreibung: A discussion is presented on nickel cadmium battery life tests using reconditioning and some comparative tests not using reconditioning. The discussion is aimed at the program application part of the testing. The goals of the program were to get an increased utilization out of the battery system in geosynchronous orbit. An attempt was made to push the depth of discharge operation up around 80 to 85 percent and the intent with the reconditioning program was to extend this type of utilization out towards a 10-year life and attune the voltage regulation.
    Schlagwort(e): ENERGY PRODUCTION AND CONVERSION
    Materialart: NASA. Goddard Space Flight Center The 1977 Goddard Space Flight Center Battery Workshop; p 259-270
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 4
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    Synchronous meteorological and geostationary operational environmental satellites operational experience (1977)
    In:  CASI
    Details
    Publikationsdatum: 2006-06-15
    Beschreibung: The mode of operation that is of interest in this discussion is a solar array battery load-sharing mode. The battery is loaded for a fraction of a second and then charged, so the cycle is a 100 millisecond load, followed by a 500 millisecond charge. The purpose of the experiment was to evaluate the charge efficiency and the state of charge. Charge/discharge ratio graphs are presented.
    Schlagwort(e): ENERGY PRODUCTION AND CONVERSION
    Materialart: NASA. Goddard Space Flight Center The 1977 Goddard Space Flight Center Battery Workshop; p 213-218
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
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    Analysis of voltage data (1977)
    In:  CASI
    Details
    Publikationsdatum: 2006-06-15
    Beschreibung: The use of statistical analysis (regression analysis) to determine the data correlation between eight voltage parameters is discussed. The eight parameters correlated include: temperature, depth of discharge; charge rate; discharge rate; percent recharge; concentration of KOH; amount of KOH; and precharge. Graphs are presented which show: (1) starpoint/centerpoint cycles to failure vs. parameters; (2) cycles to failure vs. temperature; and (3) positive and negative plate thickness and weight vs. cycles. An empirical equation derived from cycles to failure vs. temperature graph for cells cycled at 1C charge, 2C discharge, and 14 percent recharge is also presented.
    Schlagwort(e): ENERGY PRODUCTION AND CONVERSION
    Materialart: NASA. Goddard Space Flight Center The 1977 Goddard Space Flight Center Battery Workshop; p 155-172
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
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    Lewis Research Center program (1977)
    In:  CASI
    Details
    Publikationsdatum: 2006-06-14
    Beschreibung: As part of the NASA lightweight battery program, the Lewis Research Center has a number of programs that are being reviewed. A brief and general discussion of these programs is presented.
    Schlagwort(e): ENERGY PRODUCTION AND CONVERSION
    Materialart: NASA. Goddard Space Flight Center The 1977 Goddard Space Flight Center Battery Workshop; p 133-136
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
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    Air Force nickel-hydrogen test program (1977)
    In:  CASI
    Details
    Publikationsdatum: 2006-06-18
    Beschreibung: After using all the instrumentation that is available on a nickel hydrogen battery it will be subjected to the same low earth orbit cycles experienced by the sixty amphere hour nickel cadmium batteries now being flown on some low earth orbit missions. The objective of the test is to demonstrate real differences between the two batteries. In order to simulate flight conditions, the thermal environment and criteria for charge control will vary. The depth of discharge will be increased and testing will continue until some failures or some degradation or spread between cell performances are revealed. Different charge control modes are being considered in order to demonstrate a reasonable life for the nickel hydrogen battery.
    Schlagwort(e): ENERGY PRODUCTION AND CONVERSION
    Materialart: NASA. Goddard Space Flight Center The 1977 Goddard Space Flight Center Battery Workshop; p 517
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 8
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    Air Force nickel-hydrogen experiment (1977)
    In:  CASI
    Details
    Publikationsdatum: 2006-06-18
    Beschreibung: An experiment to obtain some flight experience with a nickel-hydrogen battery in low earth orbit is described. The battery was built to be as compatible with the satellite bus as possible because the satellite bus is used for recharge power. The battery is mounted on an experimental pallet on the satellite. It has its own charge control system, a modification of an existing system that is used for nickel-cadmium, which primarily uses temperature compensated voltage as its criteria. Also, on the pallet is a load bank, a resistive load band, which allows switch to various load regimes. There is some other equipment on the satellite such as the nickel-hydrogen battery to power it. Monitors attached to the 21-cell battery are described.
    Schlagwort(e): ENERGY PRODUCTION AND CONVERSION
    Materialart: NASA. Goddard Space Flight Center The 1977 Goddard Space Flight Center Battery Workshop; p 499-516
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 9
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    The NTS-2 nickel-hydrogen battery (1977)
    In:  CASI
    Details
    Publikationsdatum: 2006-06-18
    Beschreibung: Features of the first operational nickel hydrogen battery are described as well as experiences encountered during its testing and installation. Battery performance since launching of the NTS-2 satellite is discussed.
    Schlagwort(e): ENERGY PRODUCTION AND CONVERSION
    Materialart: NASA. Goddard Space Flight Center The 1977 Goddard Space Flight Center Battery Workshop; p 489-498
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 10
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    Low orbit nickel-hydrogen battery development (1977)
    In:  CASI
    Details
    Publikationsdatum: 2006-06-18
    Beschreibung: Test data developed primarily on low earth, but also some accelerated synchronous orbit data are presented for first 40 hour ampere hour boiler plate cells. Graphic data show the following characteristics: charge/discharge voltage; charge/discharge temperature; voltage; pressure; temperature; and discharge voltage.
    Schlagwort(e): ENERGY PRODUCTION AND CONVERSION
    Materialart: NASA. Goddard Space Flight Center The 1977 Goddard Space Flight Center Battery Workshop; p 481-487
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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