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  • 1
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    The Global Topography Mission (TOPSAT) (1994)
    In:  Other Sources
    Details
    Publication Date: 2018-06-08
    Keywords: Communications and Radar
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Containerless-Processing Module (1984)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: High-temperature, containerless-processing module positions and melts molten glass or metal without contact with container wall. Fluid masses manipulated, stirred, and controlled by acoustic forces. Module provides photographic monitoring and transfer of solidified specimens to storage bins.
    Keywords: FABRICATION TECHNOLOGY
    Type: NPO-14932 , NASA Tech Briefs (ISSN 0145-319X); 8; 1; P. 142
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    A study of a 63 K radiative cooler for the advanced moisture and temperature sounder (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: A study was performed of cooling methods for a space-borne, earth observing infrared optical instrument, AMTS. Major requirements on the thermal design are an optics temperature below 200 K, a detector array temperature below 75 K, orbital lifetime of 3 to 5 years, a near polar, sun synchronous orbit with altitude near 800 km. Power dissipation of the detectors is 38 mW, in the optics compartment 1.4 W. Large radiative coolers positioned so as to be shielded from sun, spacecraft and earth result in predicted optics temperature of 156 K and detector temperature of 63 K.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: AIAA PAPER 81-1101 , Thermophysics Conference; Jun 23, 1981 - Jun 25, 1981; Palo Alto, CA
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Imaging spectrometer - An advanced multispectral imaging concept (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The concept of an imaging spectrometer, which is being studied as a potential Space Shuttle experiment, is evaluated as a 'push-broom' imager that includes a spectrometer to disperse each line of imaging information into its spectral components. Using this instrument, the dispersed energy falls upon a two-dimensional focal plane array that detects both spatial and spectral information. As the line field of view is advanced over the earth by the motion of the spacecraft, the focal plane is read out constantly, which produces 'push-broom' images at multiple wavelengths. Ground instantaneous fields of view of 10 m in the visual and 20 m in the infrared are provided by the system, at a spectral resolution of 20 nm over the range from 0.4-2.5 microns. The system utilizes a triple-pass Schmidt optical system with a mosaic focal plane. A subset of the data stream is selected and encoded for transmission by the use of onboard processing.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: 1982 International Geoscience and Remote Sensing Symposium; Jun 01, 1982 - Jun 04, 1982; Munich
    Format: text
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    NASA TECHNICAL REPORTS
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