Results 171 to 180 of about 454 (211)
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The Aeronautical Journal, 1972
In a recent paper (Ref. 1) Dr. Hilton proposed the use of manoeuvres for creating zones of “no boom” which could be employed to protect cities situated along the flight path of a supersonic aircraft. The basic idea was to make use of the fact that curved flight causes a local focus of shock waves and that, in regions closer to the centre of curvature ...
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In a recent paper (Ref. 1) Dr. Hilton proposed the use of manoeuvres for creating zones of “no boom” which could be employed to protect cities situated along the flight path of a supersonic aircraft. The basic idea was to make use of the fact that curved flight causes a local focus of shock waves and that, in regions closer to the centre of curvature ...
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Measured N-wave sonic boom events and sensitivity in sonic boom metrics
AIP Conference Proceedings, 2015Various sonic boom noise metrics have been calculated for a number of sonic boom, N-wave signatures. The newly computed metrics dataset utilized high-quality recordings from the Superboom Caustic Analysis and Measurement Program (SCAMP) experiment conducted by NASA. With this signature dataset comprised of microphone measurements by long linear arrays,
Joshua Palmer, Victor W. Sparrow
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Aircraft Engineering and Aerospace Technology, 1968
THE nature of the sonic boom problem is briefly reviewed, and the experimental evidence relating to the Whitham‐Walkden theory presented. Although many atmospheric effects cannot be fully accounted for, the theory is used to predict ground overpressures directly beneath the proposed Concorde flight track. Using the work of Rao, over‐pressure values up
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THE nature of the sonic boom problem is briefly reviewed, and the experimental evidence relating to the Whitham‐Walkden theory presented. Although many atmospheric effects cannot be fully accounted for, the theory is used to predict ground overpressures directly beneath the proposed Concorde flight track. Using the work of Rao, over‐pressure values up
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Journal of Aircraft, 1969
Sonic boom theory for steady flight in atmosphere without winds, discussing sonic boom reduction by aerodynamic ...
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Sonic boom theory for steady flight in atmosphere without winds, discussing sonic boom reduction by aerodynamic ...
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The Journal of the Acoustical Society of America, 1971
Sonic booms laid down by Navy fighter aircraft flying at Mach 1.1–1.2 have been observed below the surface of the sea by means of a string of hydrophones 195 ft long dangling from a surface ship. The underwater booms were found to decay about as the −32 power of the depth below the surface, to have the same spectral content as the boom in air, and to ...
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Sonic booms laid down by Navy fighter aircraft flying at Mach 1.1–1.2 have been observed below the surface of the sea by means of a string of hydrophones 195 ft long dangling from a surface ship. The underwater booms were found to decay about as the −32 power of the depth below the surface, to have the same spectral content as the boom in air, and to ...
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Building vibration induced by sonic boom - field test in Russia
Applied Acoustics, 2022Finn Løvholt, Ivan Belyaev
exaly