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  • ACOUSTICS  (3)
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  • 1
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    Sonic boom prediction and minimization using computational fluid dynamics (1992)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: This paper describes the NASA ARC program in sonic boom prediction methodologies. This activity supports NASA's High Speed Research Program (HSRP). An overview of the program, recent results, conclusions, and current effort will be given. This effort complements research in sonic boom acceptability and validation being conducted at LaRC and ARC. The goals of the sonic boom element are as follows: to establish a predictive capability for sonic booms generated by High-Speed Civil Transport (HSCT) concepts; to establish guidelines of acceptability for supersonic overland flight; and to validate these findings with wind tunnel and flight tests. The cumulative result of these efforts will be an assessment of economic viability for supersonic transportation. This determination will ultimately be made by the aerospace industry.
    Keywords: ACOUSTICS
    Type: NASA. Langley Research Center, First Annual High-Speed Research Workshop, Part 2; p 723-738
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Investigation of sonic boom for the Space Shuttle: High cross-range orbiter (1993)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Recent studies of a proposed low cross-range straight-wing space shuttle orbiter have shown that the sonic boom created during reentry may be objectionable, particularly at low supersonic Mach number. Because of this, additional tests have been conducted to determine the sonic-boom overpressure for a blended wing-body shape proposed for use as a high cross-range shuttle orbiter. Two mission profiles, in which a constant angle of attack was held during the supersonic portion of the flight, were studied. In one case the angle of attack was 60 degrees; in the other 25 degrees. The sonic-boom pressure signatures were measured in a wind tunnel and used to estimate overpressures for both missions. A technique for alleviating the boom is indicated.
    Keywords: ACOUSTICS
    Type: NASA-TM-108238 , NAS 1.15:108238
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Investigation of sonic boom for the Space Shuttle: Low cross-range orbiter (1993)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: It is desired that the Space Shuttle Orbiter be capable of landing at airports equipped to handle present-day jet transports. Since the majority of such airports are located near heavily populated areas, an investigation has been undertaken to determine whether or not the sonic boom generated during reentry of Space Shuttle Orbiters is potentially a serious problem. The investigation was concerned with the low cross-range orbiter and reentry concept proposed by Faget of the Manned Spacecraft Center (MSC). This report describes the approach used and presents the results obtained to date.
    Keywords: ACOUSTICS
    Type: NASA-TM-108237 , NAS 1.15:108237
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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