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  • FLUID MECHANICS AND HEAT TRANSFER  (4)
  • Key words:Shock tunnels, Driver gas, Contamination, Test time  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Technical note A simple shock tunnel driver gas detector (1996)
    Springer
    Shock waves 6 (1996), S. 309-312 
    Details
    ISSN: 1432-2153
    Keywords: Key words:Shock tunnels, Driver gas, Contamination, Test time
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics , Technology
    Notes: Abstract. A device has been developed to detect the arrival of the driver gas in a shock tunnel. The detector is small enough to be used in conjunction with other experiments. It works by choking a duct when the specific heat ratio is increased past a critical value. Times are given for the onset of a 7.5% contamination level in flows with freestream enthalpies ranging from 3–9 MJ/kg. These results are compared with and are shown to be in agreement with measurements made with a mass spectrometer. Results displaying the rate at which the test gas is contaminated are also given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Shock tunnel studies of scramjet phenomena, supplement 6 (1993)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Reports by the staff of the University of Queensland on various research studies related to the advancement of scramjet technology are presented. These reports document the tests conducted in the reflected shock tunnel T4 and supporting research facilities that have been used to study the injection, mixing, and combustion of hydrogen fuel in generic scramjets at flow conditions typical of hypersonic flight. In addition, topics include the development of instrumentation and measurement technology, such as combustor wall shear and stream composition in pulse facilities, and numerical studies and analyses of the scramjet combustor process and the test facility operation.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NASA-CR-191428 , NAS 1.26:191428
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Shock Tunnel Studies of Scramjet Phenomena 1993 (1995)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Reports by the staff of the University of Queensland on various research studies related to the advancement of scramjet technology and hypervelocity pulse test facilities are presented. These reports document the tests conducted in the reflected shock tunnel T4 and supporting research facilities that have been used to study the injection, mixing, and combustion of hydrogen fuel in generic scramjets at flow conditions typical of hypersonic flight. In addition, topics include the development of instrumentation and measurement technology, such as combustor wall shear and stream composition in pulse facilities, and numerical studies and analyses of the scramjet combustor process and the test facility operation. This research activity is Supplement 10 under NASA Grant NAGw-674.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NASA-CR-195038 , NAS 1.26:195038
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Shock tunnel studies of scramjet phenomena, supplement 7 (1993)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Reports by the staff of the University of Queensland on various research studies related to the advancement of scramjet technology are presented. These reports document the tests conducted in the reflected shock tunnel T4 and supporting research facilities that have been used to study the injection, mixing, and combustion of hydrogen fuel in generic scramjets at flow conditions typical of hypersonic flight. In addition, topics include the development of instrumentation and measurement technology, such as combustor wall shear and stream composition in pulse facilities, and numerical studies and analyses of the scramjet combustor process and the test facility operation. This research activity is Supplement 7 under NASA Grant NAGW-674.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NASA-CR-191572 , NAS 1.26:191572
    Format: application/pdf
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  • 5
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    Test flow disturbances in an expansion tube (1992)
    In:  Other Sources
    Details
    Publication Date: 2019-08-27
    Description: The operation of an expansion tube is investigated theoretically with emphasis on the factors that have limited the utility of the expansion tube in the past. It is shown why the window of steady test conditions is narrow and how this window can be expanded so that these facilities can be used in a variety of hypersonic research. The theoretical predictions are supported by centerline Pitot pressure measurements using air as the test gas.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: Journal of Fluid Mechanics (ISSN 0022-1120); p. 493-521.
    Format: text
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    NASA TECHNICAL REPORTS
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