Second Conference on Sonic Boom Research

Second Conference on Sonic Boom Research PDF

Author: Ira R. Schwartz

Publisher:

Published: 1968

Total Pages: 208

ISBN-13:

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Proceedings of a conference on sonic boom reduction in supersonic transport flight. Topics include shock wave propagation and refraction, prediction methods for acoustic attenuation, and aerodynamic engineering aspects.

Commercial Supersonic Technology

Commercial Supersonic Technology PDF

Author: National Research Council

Publisher: National Academies Press

Published: 2002-02-16

Total Pages: 128

ISBN-13: 0309082773

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High-speed flight is a major technological challenge for both commercial and business aviation. As a first step in revitalizing efforts by the National Aeronautics and Space Administration (NASA) to achieve the technology objective of high-speed air travel, NASA requested the National Research Council (NRC) to conduct a study that would identify approaches for achieving breakthroughs in research and technology for commercial supersonic aircraft. Commercial Supersonic Technology documents the results of that effort. This report describes technical areas where ongoing work should be continued and new focused research initiated to enable operational deployment of an environmentally acceptable, economically viable commercial aircraft capable of sustained supersonic flight, including flight over land, at speeds up to approximately Mach 2 in the next 25 years or less.

Sonic Booms Resulting from Extremely Low-altitude Supersonic Flight: Measurements and Observations on Houses, Livestock and People

Sonic Booms Resulting from Extremely Low-altitude Supersonic Flight: Measurements and Observations on Houses, Livestock and People PDF

Author: C. W. Nixon

Publisher:

Published: 1968

Total Pages: 36

ISBN-13:

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Sonic booms generated by F-4C aircraft flying low-level terrain- following profiles during Joint Task Force II operations near Tonopah, Nevada, were recorded under and near the flight tracks, and responses of structures, animals, and people were observed. Recorded overpressures up to 144 psf were analyzed, correlated with available aircraft operations data, and compared with data from different aircraft flying similar profiles. Observations of structures, animals, and people were correlated with the measured overpressures. Results include acquisition of near-field recordings of overpressures generated by the F-4C, the finding that some window glass fragments were propelled a short distance rather than falling directly below the window, an instance in which the measured overpressure of a sonic boom 1 mile to the side of the track far exceeded the predicted value, the finding that livestock (undetermined prior exposure to acoustic stimuli in this situation) did not respond adversely to the sonic booms, confirmation that very intense sonic booms do not harm people directly and the reaffirmation that the selection of site locations for low- level supersonic training missions will continue to pose a problem.