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  • Other Sources  (11)
  • PHYSICS, ATOMIC, MOLECULAR, AND NUCLEAR  (6)
  • Spacecraft Propulsion and Power  (5)
  • Polymer and Materials Science
  • 1
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    Testing Conducted for Lithium-Ion Cell and Battery Verification (2004)
    In:  CASI
    Details
    Publication Date: 2018-06-05
    Description: The NASA Glenn Research Center has been conducting in-house testing in support of NASA's Lithium-Ion Cell Verification Test Program, which is evaluating the performance of lithium-ion cells and batteries for NASA mission operations. The test program is supported by NASA's Office of Aerospace Technology under the NASA Aerospace Flight Battery Systems Program, which serves to bridge the gap between the development of technology advances and the realization of these advances into mission applications. During fiscal year 2003, much of the in-house testing effort focused on the evaluation of a flight battery originally intended for use on the Mars Surveyor Program 2001 Lander. Results of this testing will be compared with the results for similar batteries being tested at the Jet Propulsion Laboratory, the Air Force Research Laboratory, and the Naval Research Laboratory. Ultimately, this work will be used to validate lithium-ion battery technology for future space missions. The Mars Surveyor Program 2001 Lander battery was characterized at several different voltages and temperatures before life-cycle testing was begun. During characterization, the battery displayed excellent capacity and efficiency characteristics across a range of temperatures and charge/discharge conditions. Currently, the battery is undergoing lifecycle testing at 0 C and 40-percent depth of discharge under low-Earth-orbit (LEO) conditions.
    Keywords: Spacecraft Propulsion and Power
    Type: Research and Technology 2003; NASA/TM-2004-212729
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Glauber calculations of polarization of Lyman-alpha resulting from e/-/-H/1s/ collisions. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: We have calculated the polarization fraction of the Lyman-alpha radiation emitted in e/-/-H/1s/ collisions using the Glauber, Born, and various Vainshtein approximations, and have compared these predictions with observation. We find that the Born, Glauber and all forms of the Vainshtein yield results which are very close to each other and to the data in the energy range from 30 to 700 eV. The comparatively small differences between the various approximations are detailed in the text; also, the reason for the close agreement of the predicted polarization fractions - although the computed 1s-2p total and differential cross sections are not so close - is explained. With respect to the Glauber approximation, the importance of computing the phase integral along a direction perpendicular to the momentum transfer q at each value of q, is stressed.
    Keywords: PHYSICS, ATOMIC, MOLECULAR, AND NUCLEAR
    Type: Journal of Physics; vol. 5
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Glauber amplitudes in charged particle hydrogen atom collisions (1971)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Glauber scattering amplitudes for atomic hydrogen excitation by electrons or protons, presenting closed form expressions requiring no numerical integration
    Keywords: PHYSICS, ATOMIC, MOLECULAR, AND NUCLEAR
    Type: ; - ASTRONOMY 1969- TE
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Elastic and inelastic scattering of protons by hydrogen atoms (1971)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Glauber approximations for elastic and inelastic scattering of protons by ground state hydrogen atoms, comparing with measurements
    Keywords: PHYSICS, ATOMIC, MOLECULAR, AND NUCLEAR
    Type: ; 35 (
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Comparisons of the Glauber and Vainshtein approximations for inelastic electron-hydrogen scattering (1971)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Glauber and Vainshtein approximations for cross sections of 1s-2p excitation during inelastic electron-atomic hydrogen scattering
    Keywords: PHYSICS, ATOMIC, MOLECULAR, AND NUCLEAR
    Type: ; UGREVUE(
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Studies of low-energy ionic collisions Final report, 1 Oct. 1965 - 30 Sep. 1967 (1967)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Ionic-molecular collisions, and collision induced dissociation of ions
    Keywords: PHYSICS, ATOMIC, MOLECULAR, AND NUCLEAR
    Type: NASA-CR-93125 , AFOSR-67-2669 , AD-661975
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    Ionization of positive ions. (1969)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Binary encounter model for ionization by charged particle impact modified to evaluate cross section for ionization of positive ions by electron impact
    Keywords: PHYSICS, ATOMIC, MOLECULAR, AND NUCLEAR
    Type: ; TROPHYSICAL JOURNAL
    Format: text
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    NASA TECHNICAL REPORTS
  • 8
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    Advanced Power Technology Development Activities for Small Satellite Applications (2017)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: NASA Glenn Research Center (GRC) has a long history related to the development of advanced power technology for space applications. This expertise covers the breadth of energy generation (photovoltaics, thermal energy conversion, etc.), energy storage (batteries, fuel cell technology, etc.), power management and distribution, and power systems architecture and analysis. Such advanced technology is now being developed for small satellite and cubesat applications and could have a significant impact on the longevity and capabilities of these missions. A presentation during the Pre-Conference Workshop will focus on various advanced power technologies being developed and demonstrated by NASA, and their possible application within the small satellite community.
    Keywords: Spacecraft Propulsion and Power
    Type: GRC-E-DAA-TN45147 , Annual AIAA/USU Conference on Small Satellites; Aug 05, 2017 - Aug 10, 2017; Logan, UT; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Progress of Ongoing NASA Lithium-Ion Cell Verification Testing for Aerospace Applications (2008)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: A Lithium-ion Verification and Validation Program with the purpose to assess the capabilities of current aerospace lithium-ion (Li-ion) battery cells to perform in a low-earth-orbit (LEO) regime was initiated in 2002. This program involves extensive characterization and LEO life testing at ten different combinations of depth-of-discharge, temperature, and end-of-charge voltage. The test conditions selected for the life tests are defined as part of a statistically designed test matrix developed to determine the effects of operating conditions on performance and life of Li-ion cells. Results will be used to model and predict cell performance and degradation as a function of test operating conditions. Testing is being performed at the Naval Surface Warfare Center/Crane Division in Crane, Indiana. Testing was initiated in September 2004 with 40 Ah cells from Saft and 30 Ah cells from Lithion. The test program has been expanded with the addition of modules composed of 18650 cells from ABSL Power Solutions in April 2006 and the addition of 50 Ah cells from Mine Safety Appliances Co. (MSA) in June 2006. Preliminary results showing the average voltage and average available discharge capacity for the Saft and Lithion packs at the test conditions versus cycles are presented.
    Keywords: Spacecraft Propulsion and Power
    Type: NASA/TM--2008-215154 , E-16394
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 10
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    Preliminary Investigation on Battery Sizing Investigation for Thrust Vector Control on Ares I and Ares V Launch Vehicles (2011)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: An investigation into the merits of battery powered Electro Hydrostatic Actuation (EHA) for Thrust Vector Control (TVC) of the Ares I and Ares V launch vehicles is described. A top level trade study was conducted to ascertain the technical merits of lithium-ion (Li-ion) and thermal battery performance to determine the preferred choice of an energy storage system chemistry that provides high power discharge capability for a relatively short duration.
    Keywords: Spacecraft Propulsion and Power
    Type: NASA/TM-2011-216899 , E-17478
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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