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Sonic Booms Produced by United States Air Force and United States Navy Aircraft: Measured Data
R. A. Lee,J. M. Downing +1 more
TLDR
In this article, the C-weighted Sound Exposure Level (CSEL) was estimated for 43 near steady supersonic flights of the above United States Air Force and United States Navy aircraft.Abstract:
: A sonic measurement program was conducted at Edwards Air Force Base Sonic boom signatures, produced by F-4, F-14, F-15, F-16, F-18, F111, SR-71, and T-38 aircraft, were obtained under the flight track and at various lateral sites which were located up to 18 miles off-track Thirteen monitors developed by Det 1 AL/BBE were used to collect full sonic boom waveforms, and nine modified dosimeters were used to collect supplemental peak overpressures and the C- weighted Sound Exposure Levels (CSEL) for 43 near steady supersonic flights of the above United States Air Force and United States Navy aircraft This report describes the measured database (BOOMFILE) that contains sonic boom signatures and overpressures, aircraft tracking, and local weather data These measured data highlight the major influences on sonic boom propagation and generation The data from this study show that a constant offset of 26 from the peak overpressure expressed in dB gives a good estimate of the CSEL of a sonic boomread more
Citations
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Journal ArticleDOI
Sonic boom in the shadow zone: A geometrical theory of diffraction
TL;DR: In this paper, a nonlinear, geometrical theory of diffraction in the time domain is proposed to predict the amplitude of sonic booms only within the carpet, and the ground impedance is shown to influence the rise time and peak amplitude of the signal mostly close to the cutoff.
Proceedings ArticleDOI
The Challenges of Defining an Acceptable Sonic Boom Overland
TL;DR: Sonic boom is the ground trace of the pressure disturbance created by the passage of an aircraft, or any other object, flying faster than the speed of sound as mentioned in this paper, and it is commonly called an N wave.
Dissertation
3D simulation of acoustical shock waves propagation through a turbulent atmosphere. Application to sonic boom
TL;DR: In this paper, a numerical one-way method is developed to model and simulate three-dimensional nonlinear propagation of acoustical shock waves in a moving heterogeneous medium, which relies on a split-step approach that permits to take into account efficiently the different involved physical mechanisms.
Measured Sonic Boom Signatures Above and Below the XB-70 Airplane Flying at Mach 1.5 and 37,000 Feet
TL;DR: In the 1966-67 National Sonic Boom Evaluation Program, a series of in-flight flow field measurements were made above and below the USAF XB-70 using an instrumented NASA F-104 aircraft with a specially designed nose probe as mentioned in this paper.
High-Speed Research: Sonic Boom, volume 1
TL;DR: A High-Speed Sonic Boom Workshop was held at LaRC of Feb. 25-27, 1992 as mentioned in this paper, where the purpose was to make presentations on current research activities and accomplishments and to assess progress in the area of sonic boom.