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  • 1
    facet.materialart.
    Unknown
    Putting all our noise technology to work (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: An assessment of the present state of the art in noise reduction technology indicates that this technology has the potential for effectively attaining this goal - a conclusion that is in apparent conflict with the frequently voiced complaints on intolerable noise levels near airports. Measures are suggested for a more vigorous implementation of available technology in practice to combat the aircraft noise problem.
    Keywords: PROPULSION SYSTEMS
    Type: Astronautics and Aeronautics; 12; Jan. 197
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
    facet.materialart.
    Unknown
    NASA's quiet engine programs. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-08-13
    Description: It is the goal of NASA to provide the technology that will make the aircraft unobtrusive in its environment. The primary work in propulsion source noise reduction centers around the technology to modify existing engines and the technology to design new propulsion systems for CTOL, STOL, and VTOL that operate at significantly lower noise levels than present systems. It is recommended that noise standards should also be established for new engines. Another recommendation is concerned with the incorporation of noise and pollution technology in military aircraft propulsion developments.
    Keywords: PROPULSION SYSTEMS
    Type: Journal of Air Traffic Control; 14; Sept
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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