Tracianne B. Neilsen

TL;DR: Noise measured in the vicinity of an F-22A Raptor has been compared to similarity spectra found previously to represent mixing noise from large-scale and fine-scale turbulent structures in laboratory-scale jet plumes, with the largest discrepancy occurring in the regions of maximum radiation.

TL;DR: In this article, the authors re-examine the Woulff and McGetchin (1976) approach in the context of the current understanding of jet noise, using data from a laboratory jet, a full-scale military jet aircraft, and a fullscale rocket motor.

TL;DR: It is shown that M-SONAH produces accurate field reconstructions for both inward and outward propagation in the region spanned by the physical hologram measurement, which suggests that directivity depends mainly on estimated source location.

TL;DR: In this article, the lowermost portion of an explosive volcanic eruption column is considered a momentum-driven jet and infrasound from the 2011 eruption of Nabro Volcano, Eritrea has waveform features highly similar to the crackle phenomenon uniquely produced by man-made supersonic jet engines and rockets and is characterized by repeated asymmetric compressions followed by weaker, gradual rarefactions.