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  • SPACECRAFT INSTRUMENTATION  (3)
  • AUXILIARY SYSTEMS  (2)
  • 1
    Publication Date: 2011-08-17
    Description: A sounding rocket experiment was performed in June 1976, in which the solar constant was observed simultaneously outside the earth's atmosphere by three types of absolute cavity radiometers (the Primary Absolute Cavity Radiometer and two Active Cavity Radiometers, Type IV) and duplicates of Nimbus 6 ERB/ESP (Earth Radiation Budget/Eclectic Satellite Pyrheliometer) solar channels. The preliminary average solar constant result from the cavity radiometers is 1367 W/sq m with an uncertainty of less than plus or minus 0.5% in SI units. The duplicate ERB channel 3 on the rocket gave a value of 1389 W/sq m, which agreed exactly with the Nimbus 6 ERB channel 3 measurement made simultaneously with the rocket flight.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: Applied Optics; 16; Oct. 197
    Format: text
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  • 2
    Publication Date: 2019-06-27
    Description: Total solar irradiance was observed simultaneously outside the earth's atmosphere by three types of absolute cavity radiometers and duplicates of four of the Nimbus 6 Earth Radiation Budget (ERB) solar channels in a June 1976 sounding rocket experiment. The preliminary average solar constant result from the cavity radiometers is 1367 Wm (-2) with an uncertainty of less than + or - 0.5% in S.I. units. The duplicate ERB channel 3 on the rocket gave a value of 1389 Wm (-2) which agreed exactly with the Nimbus 6 ERB channel 3 measurement made simultaneously with the rocket flight.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: NASA-TM-X-71305 , X-942-77-66
    Format: application/pdf
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  • 3
    Publication Date: 2019-07-13
    Description: Papers on the state of the art and future prospects of solar energy utilization in the United States are included. Research and technologies for heating and cooling of buildings, solar thermal energy conversion, photovoltaic conversion, biomass production and conversion, wind energy conversion and ocean thermal energy conversion are covered. The increasing funding of the National Solar Energy Program is noted. Individual items are announced in this issue.
    Keywords: AUXILIARY SYSTEMS
    Type: Symposium on Solar Energy Utilization; Apr 30, 1974; Washington, DC; US
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  • 4
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    In:  Other Sources
    Publication Date: 2019-07-13
    Description: Values of the solar constant and solar spectrum have been adopted as design standards for NASA space vehicles and as engineering standards by IES/ASTM. High resolution spectral data for the UV and visible range, normalized to these standards have been derived. Applications of these results for weather analysis, air pollution, ozone production, and atmospheric energy exchange are reviewed. Indications of possible variations in solar energy, total and spectral, and their influence on the earth-atmosphere system are examined. Programs for future studies of these variations from satellites and high-altitude aircraft are discussed.
    Keywords: AUXILIARY SYSTEMS
    Type: International Congress on the Sun in the Service of Man; Jul 02, 1973 - Jul 06, 1973; Paris; France
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  • 5
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    In:  CASI
    Publication Date: 2019-07-13
    Description: Measurements made at high altitudes from aircraft have resulted in the establishment of standard values of the solar constant and extraterrestrial solar spectral irradiance. These standard values and other solar spectral curves are described. The problem of possible variations of the solar constant and solar spectrum and their influence on the earth-atmosphere system and weather related phenomena is examined. It is shown that the solar energy input parameters should be determined with considerably greater accuracy and precision than has been possible. An instrument package designed as a compact, low weight solar energy monitor in space (SEMIS) is described.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: NASA-TM-X-70623 , X-912-74-78 , Symp. on Solar Radiation Meas. and Instrumentation; Nov 13, 1973 - Nov 15, 1973; Rockville, MD; United States
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