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  • 1
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    Study of an ACT demonstrator with substantial performance improvements using a redesigned JetStar (1976)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: The feasibility was studied of modifying a JetStar airplane into a demonstrator of benefits to be achieved from incorporating active control concepts in the preliminary design of transport type aircraft. Substantial benefits are shown in terms of fuel economy and community noise by virtue of reduction in induced drag through use of a high aspect ratio wing which is made possible by a gust alleviation system. An intermediate configuration was defined which helps to isolate the benefits produced by active controls technology from those due to other configuration variables.
    Keywords: AIRCRAFT DESIGN, TESTING AND PERFORMANCE
    Type: Advanced Control Technol. and its Potential for Future Transport Aircraft; p 3-35
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Design, development, and field testing of Infrared Heterodyne Radiometer (IHR) for remote profiling of tropospheric and stratospheric species (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The performance of a dual-channel infrared heterodyne radiometer, designed to remotely monitor the concentration and vertical distribution of selected atmospheric species, is described. Ground based solar viewing measurement using the IHR were performed at selected laser transitions for ammonia (NH3 and ozone O3). Flight tests were conducted aboard the Galileo II, NASA Ames CV-990, on the Latitude Survey Mission. Ozone was the selected atmospheric species for the airborne flight measurements because of the scientific interest in this atmospheric species, the availability of in situ monitors, the coordinated ozone measurements, and the availability of ground truth data. The IHS was operated in the solar viewing mode to determine ozone distributions in the stratosphere and in the nadir viewing mode to determine the ozone distribution in the troposphere. Airborne atmospheric propagation measurements also were carried out at selected CO2 laser transitions.
    Keywords: ENVIRONMENT POLLUTION
    Type: NASA-CR-3448 , A610-IV
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Application of active controls technology to the NASA Jet Star airplane (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The feasibility was studied of modifying a Jet Star airplane into a demonstrator of benefits to be achieved from incorporating active control concepts in the preliminary design of transport type aircraft. Substantial benefits are shown in terms of fuel economy and community noise by virtue of reduction in induced drag through use of a high aspect ratio wing which is made possible by a gust alleviation system. An intermediate configuration was defined which helps to isolate the benefits produced by active controls technology from those due to other configuration variables. Also, an alternate configuration which incorporated composite structures, but not active controls technology, was defined in order to compare the benefits of composite structures with those of active controls technology.
    Keywords: AIRCRAFT DESIGN, TESTING AND PERFORMANCE
    Type: NASA-CR-2561 , H-868
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Infrared heterodyne spectrometer measurements of vertical profile of tropospheric ammonia and ozone (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Remote sensing of the concentration and vertical distribution of atmospheric gases has been carried out using a dual CO2 laser multichannel infrared heterodyne spectrometer (IHS). The high specificity and nearly quantum-noise-limited sensitivity of the IHS provide the capability of scanning individual signature lines of selected atmospheric constituents in the 9 to 11 micron region. A comprehensive investigation of the spectral overlap between CO2 laser local oscillator transitions and selected atmospheric constituents was performed; measurements of the atmospheric absorption of solar radiation from the ground were carried out at selected laser transitions for ammonia and ozone.
    Keywords: ENVIRONMENT POLLUTION
    Type: AIAA PAPER 77-73 , Aerospace Sciences Meeting; Jan 24, 1977 - Jan 26, 1977; Los Angeles, CA
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Design integration of laminar flow control for transport aircraft (1984)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Keywords: AIRCRAFT DESIGN, TESTING AND PERFORMANCE
    Type: Journal of Aircraft (ISSN 0021-8669); 21; 612-617
    Format: text
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    NASA TECHNICAL REPORTS
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