Results 161 to 170 of about 405 (198)
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Predicting transmission of shaped sonic booms into a residential house structure
The Journal of the Acoustical Society of America, 2010Human perception of sonic booms is a major impediment to commercial supersonic flight. Shaping, which reduces the audible shock waves of a boom, can make outdoor perception of booms acceptable. Perception of sonic booms experienced indoors is of concern, and it is not yet established whether shaped booms offer benefit to indoor listeners.
Natalia V, Sizov +2 more
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A Space Marching Method for Sonic Boom Near Field Predictions
54th AIAA Aerospace Sciences Meeting, 2016The conventional sonic boom propagation prediction method widely adopted in supersonic aircraft design involves a two-step procedure. In the first step, a compressible viscous or inviscid Computational Fluid Dynamics analysis is applied to the aircraft geometry at flight conditions to produce a flow field solution near the aircraft.
Hao Shen, David S. Lazzara
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Numerical and Mesh Resolution Requirements for Accurate Sonic Boom Prediction
Journal of Aircraft, 2009A careful study is conducted to assess the numerical mesh resolution requirements for the accurate computation ofsonic boom ground signatures produced by complete aircraft configurations. The details of the ground signature candepend heavily on the accurate prediction of the pressure distribution in the near field of the aircraft.
Choi, S Choi, Seongim +2 more
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Prediction of shaped sonic boom focusing.
The Journal of the Acoustical Society of America, 2010The focusing effects of aircraft maneuvers and accelerations on shaped, or minimized, sonic boom signals have been investigated. The spectrally accurate boom prediction methodology of Pilon [AIAA J. 45, 2149–2156 (2007)] has been enhanced to include the effects of focusing through an implementation of the nonlinear Tricomi equation solver of Auger and ...
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Sonic Boom Theory: Its Status in Prediction and Minimization
Journal of Aircraft, 1976This paper gives a brief review of the currently accepted understanding of sonic boom phenomena and describes the manner in which modified linearized theory and geometric acoustics are used to predict the sonic boom caused by a complex aircraft configuration. Minimization methods that have evolved in recent years are discussed with particular attention
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Comparison of sonic boom rise time prediction techniques
The Journal of the Acoustical Society of America, 1992An important quantity in determining the loudness of sonic booms outdoors is the rise time. In the absence of turbulence, the rise time is dictated by frequency-dependent loss mechanisms in the atmosphere including relaxation, viscosity, and thermal conduction. Two techniques have been used to predict rise times of sonic booms.
Henry E. Bass, Richard Raspet
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Synthetic vision display with integral sonic boom predictions
SPIE Proceedings, 2017Synthetic vision systems are becoming common in the business jet community. The perspective display of terrain information provides a display of complex information in a visual manner that pilots are accustomed to. Research and flight testing is underway to allow low noise supersonic business jet operations.
Laura M. Smith-Velazquez +2 more
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Monitoring, prediction, and management of sonic booms in a valued ecosystem
The Journal of the Acoustical Society of America, 2007Goose Bay, Labrador, is a sensitive ecosystem under airspace that has been host to military flying operations since World War II. Since 1995, the Institute for Environmental Monitoring and Research has documented and helped mitigate the effects of low altitude flight operations, serving to protect the welfare of aboriginal people and the survival of ...
Kenneth J. Plotkin +2 more
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An Advanced Approach for Far-Field Sonic Boom Prediction
47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition, 2009The sonic boom is one of the most severe problems confronting the advancement of high-speed air transportation and depends on many factors such as aircraft geometry, flight and atmosphere conditions and ground topography beneath the flight path. This paper presents an approach to accurately calculate the sonic boom from a supersonic body.
Anatoly Potapkin +6 more
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Sonic boom environmental impact prediction methods and issues
The Journal of the Acoustical Society of America, 1998Concerns over the environmental impact of sonic booms include their effect on humans, other animals, and fabricated structures. Over the past few years, CAA has been involved in a number of projects focusing on the latter two concerns. Specifically, working with Hubbs Sea World to supplement previous empirical studies, an analytical model was developed
Joel Garrelick +2 more
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