Broadband shock-associated noise from a high-performance military aircraft

Level-educed Wavepacket Representation of Noise Radiation from a High-Performance Military Aircraft

An analytical wavepacket-based jet noise model has been applied for the first time to highperformance, military aircraft noise. Ground-based acoustical measurements were made of a tethered high-performance military aircraft with one engine cycling through four engine conditions. The resulting spectra have been decomposed into fine and large-scale similarity spectral components. The spatial dist...

Spatiotemporal Correlation Analysis of Jet Noise from a High-Performance Military Aircraft

Correlation analyses of ground-based acoustic-pressure measurements of noise from a tethered F-22A provide insights into the sound-field characteristics with position and engine condition. Time-scaled single-point (auto) correlation functions show that, to the side of the nozzle exit, the temporal-correlation envelope decays rapidly, whereas the envelope decays more slowly in the maximum radiat...

Near-field noise measurements of a high-performance military jet aircraft

Published near-field analyses of full-scale jet noise are limited, and the application of observed laboratory-scale phenomena to full-scale jets is not well understood. To obtain a greater understanding of the connection between radiated noise and source characteristics in full-scale, heated, supersonic jets produced by military aircraft, extensive acoustical measurements were made in the geome...

Noise measurements in the near field of a high-performance military jet aircraft

Published near-field analyses of full-scale jet noise are limited, and the application of observed laboratory scale phenomena to full-scale jets is not well understood. To obtain a greater understanding of the connection between radiated noise and source characteristics in full-scale, heated, supersonic jets produced by military aircraft, acoustical measurements were made in the geometric near ...

Characteristics of Noise Associated with the Operation of Military Aircraft.