The Shaped Sonic Boom Demonstration project showed for the first time that by careful design of aircraft contour the resultant sonic boom can maintain a tailored shape, propagating through a real atmosphere down to ground level. In order to assess the propagation characteristics of the shaped sonic boom and to validate computational fluid dynamics codes, airborne measurements were taken of the pressure signatures in the near field by probing with an instrumented F-15B aircraft, and in the far field by overflying an instrumented L-23 sailplane. This paper describes each aircraft and their instrumentation systems, the airdata calibration, analysis of the near- and far-field airborne data, and shows the good to excellent agreement between computational fluid dynamics solutions and flight data. The flights of the Shaped Sonic Boom Demonstration aircraft occurred in two phases. Instrumentation problems were encountered during the first phase, and corrections and improvements were made to the instrumentation system for the second phase, which are documented in the paper.
Airborne Shaped Sonic Boom Demonstration Pressure Measurement with Computational Fluid Dynamics Comparisons
2005
40 pages
Report
No indication
English
Aerodynamics , Flight altitude , Flight tests , Pressure measurement , Sonic booms , Computational fluid dynamics , Aircraft , Design , Supersonic speed , Calibration , Aerodynamic noise , Data acquisition , Jet aircraft noise , Instrumentation , Supersonic flight , Flight data , Demonstration project
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