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  • 1
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    Cognitive Behavioural Systems (2013)
    Springer Berlin Heidelberg
    Details
    Publication Date: 2018-01-31
    Description: Published
    Description: 1VV. Altro
    Description: restricted
    Keywords: User Interfaces ; Human Computer Interaction ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: book
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    PAPER (OA)
  • 2
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    Single cell recongidioning test (1978)
    In:  CASI
    Details
    Publication Date: 2006-01-12
    Description: Reconditioning the voltage and current profiles, capacity discharge and current, and charge and discharge cycles are presented.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center 11th Ann. Battery Workshop; p 171-181
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Nickel-hydrogen Cell Test Program Summary (1985)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Three prototype 50 ampere-hour (Ah) nickel-hydrogen cells of the Air Force Wright Aeronautical Laboratories (AWFAL) design were cycled to failure. A summary of the life cycling tests and failure analyses of the cells are presented. The cells were cycled in a simulated low earth orbit regime at depths of discharge ranging from 25 to 80 percent. Trend data, such as end of discharge voltage and cell capacity, was recorded during test. Cells 1, 2, and 3 completed 17167, 2473, and 10080 charge/discharge cycles, respectively, prior to failure. All failed due to internal shorts, and were disassembled to determine cause of failure.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: NASA. Goddard Space Flight Center The 1984 Goddard Space Flight Center Battery Workshop; p 549-564
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Failure Analysis of Nickel-hydrogen Cell Subjected to Simulated Low Earth Orbit Cycling (1984)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: A nickel-hydrogen cell completed 10,080 simulated low earth orbit charge/discharge cycles at depths-of-discharge ranging from 50 to 80 percent prior to failure. The cell is of the Air Force design, rated at 50 ampere-hours, 8.9 cm (3.5 inches) in diameter. Upon disassembly, the end of the polysulfone core supporting the electrode stack was found to have fractured. This allowed the electrode stack to expand. A massive short was found at the inner diameter of the electrodes centered roughly at plate set 34 to 37 from the positive end of the electrode stack. The damaged area extended through approximately one third of the electrode stack, with the effect becoming progressively less with distance from plate set 34 to 37. Measured thicknesses of the positive plates were significantly greater than the initial specification values. The postulated cause of failure is that positive plate growth caused fracture of the shoulder from the end of the polysulfone core on which the electrodes are mounted. The electrode stack relieved and pressure points were created at the area near the inner diameter of the plates at the tab attachment. A short occurred at a pressure point between opposing plates and propagated to other electrode sets due to thermal and mechanical stresses caused by the short.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: NASA. Goddard Space Flight Center The 1983 Goddard Space Flight Center Battery Workshop; p 523-538
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Nickel hydrogen cell tests (1981)
    In:  Other Sources
    Details
    Publication Date: 2016-06-07
    Description: Some parametric tests followed by cycling tests are described for the characterization of the service life of nickel hydrogen cells. Three cells were automatically cycled in simulated low Earth orbit in 35 minute discharge, 55 minute charge, with charging voltage limited, temperature compensated. The cells were mounted in a fixture that conducts heat to an aluminum baseplate. The baseplate in turn, is bounded in a temperature controlled bath to remove the heat from the mounted fixture. One cell was tested with a zircar separator, which failed after 2473 cyles. Two other cells were tested one with a zircar separator; the other with asbestos. More than 400 cycles were achieved.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center The 1980 Goddard Space Flight Center Battery Workshop; p 409-418
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    NASA 50 amp hour nickel cadmium battery waste heat determination (1980)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: A process for determining the waste heat generated in a 50-ampere-hour, nickel cadmium battery as a function of the discharge rate is described and results are discussed. The technique involved is essentially calibration of the battery as a heat transfer rate calorimeter. The tests are run at three different levels of battery activity, one at 40-watts of waste heat generated, one at 60, and one at 100. Battery inefficiency ranges from 14 to 18 percent at discharge rates of 284 to 588 watts, respectively and top-of-cell temperatures of 20 C.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Goddard Space Flight Center The 1979 Goddard Space Flight Center Battery Workshop; p 269-275
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    NiH2 cell test update (1982)
    In:  Other Sources
    Details
    Publication Date: 2016-06-07
    Description: Testing at 9500 cycles on one cell and at 7500 on a second is reported. A third cell failed.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: NASA. Goddard Space Flight Center The 1981 GSFC Battery Workshop; p 533-545
    Format: text
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    NASA TECHNICAL REPORTS
  • 8
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    Nickel-hydrogen battery integration study for the Multimission Modular Spacecraft (1980)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A study has been performed to determine the feasibility of using nickel-hydrogen batteries as replacements for the nickel-cadmium batteries currently used for energy storage in the Multimission Modular Spacecraft under a contract with NASA Goddard Space Flight Center. The battery configuration was selected such that it meets volumetric and mounting constraints of the existing battery location, interfaces electrically with existing power conditioning and distribution equipment, and maintains acceptable cell operating temperatures. The battery contains 21, 50 ampere-hour cells in a cast aluminum structural frame. Cells used in the battery design are those developed under the Air Force's Aero Propulsion Laboratory funding and direction. Modifications of the thermal control system were necessary to increase the average output power capability of the Modular Power Subsystem.
    Keywords: SPACECRAFT PROPULSION AND POWER
    Type: Energy to the 21st century; Aug 18, 1980 - Aug 22, 1980; Seattle, WA
    Format: text
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    NASA TECHNICAL REPORTS
  • 9
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    Nickel-cadmium batteries for the Modular Power Subsystem (1980)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Nickel-cadmium batteries of 20 and 50 ampere-hour (AH) capacity have been developed and qualified. These batteries provide an energy storage capability of 40 to 150 AH for the Modular Power Subsystem, which is the power source for NASA's Multimission Modular Spacecraft. Battery fabrication is rigidly controlled to assure uniform performance from battery to battery. A unique feature of the battery design is that cells from various manufacturers can be used for battery assembly without modification. Both 20 and 50-AH batteries have been delivered, and an MPS module with three 20-AH batteries is currently operating satisfactorily in low earth orbit. Design characteristics and performance of the batteries are described.
    Keywords: SPACECRAFT PROPULSION AND POWER
    Type: Energy to the 21st century; Aug 18, 1980 - Aug 22, 1980; Seattle, WA
    Format: text
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    NASA TECHNICAL REPORTS
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