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  • Other Sources  (3)
  • 2000-2004
  • 1995-1999
  • 1975-1979  (3)
  • 1978  (3)
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  • 2000-2004
  • 1995-1999
  • 1975-1979  (3)
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  • 1
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    Improved dewpoint-probe calibration (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Relatively-simple pressure-control apparatus calibrates dewpoint probes considerably faster than conventional methods, with no loss of accuracy. Technique requires only pressure measurement at each calibration point and single absolute-humidity measurement at beginning of run. Several probes can be calibrated simultaneously and points can be checked above room temperature.
    Keywords: MECHANICS
    Type: MSC-16811 , NASA Tech Briefs (ISSN 0145-319X); 2; 4; P. 3
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    Some aspects of the interaction of radiation with the thermal and mass budgets of cloud droplets (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: It is shown that the effects of radiative heating or cooling can have a substantial influence on the mass budget of a cloud droplet and thus on the microphysical properties of a cloud as a whole. The radiative transfer equation, including all orders of multiple scattering, is solved for spectral windows of earth's atmosphere by adopting the Eddington approximation and assuming that the cloud is isothermal and illuminated by fluxes from both the ground and the sky. The results obtained for the 8-12-micron window indicate that radiative cooling can increase a droplet's growth rate and may also make the droplet cooler than the surrounding gas while water vapor is diffusing in, which would cause diffusiophoreisis and thermophoreisis to combine and increase the efficiency with which droplets would scavenge aerosols.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: In: Joint Conference on Sensing of Environmental Pollutants; Nov 06, 1977 - Nov 11, 1977; New Orleans, LA
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Technology for space transportation systems (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-08-28
    Description: The overall objective of the NASA technology program for advanced space transportation systems is to provide the technology base for improved vehicle capability, greater mission flexibility, and much lower operational costs through full reusability. Earth-to-orbit-and-return vehicles are considered, taking into account structures and materials, reentry technology, and chemical propulsion. Attention is also given to orbital transfer vehicles, interplanetary transfer vehicles, and shuttle technology experiments. It is pointed out that the Space Shuttle will provide the first significant step towards low cost, workhorse type space transportation. The technology advances currently in work will provide a basis for a continuing reduction of transportation operational costs.
    Keywords: SPACE TRANSPORTATION
    Type: Space Congress; Apr 26, 1978 - Apr 28, 1978; Cocoa Beach, FL
    Format: text
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    NASA TECHNICAL REPORTS
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