The implementation of advanced low-emission aircraft engine technologies and the
reduction of noise from airframe, fan, and jet exhaust have made noise contributions from an …

In 1971, the US National Aeronautics and Space Administration (NASA) published a
seminal report—NASA SP-8072—which compiled the results of the early supersonic jet …

Holographic reconstructions of the sound field in the vicinity of a tied-down F-35 aircraft were
achieved by applying multisource statistically optimized near-field acoustical holography to …

Spatiospectral lobes are significant contributors to noise radiated from full-scale tactical
aircraft. Prior studies have explored lobe frequency-domain characteristics, but a joint time …

Acoustic source characterization of full-scale supersonic jets remains a vital component of
understanding jet noise. Identification of fundamental characteristics such as source location …

HARACTERIZATION of the aeroacoustic noise source region in turbulent jets using
acoustical measurements is most often carried out using directional microphone arrays …

Application of phased-array algorithms to acoustic measurements in the vicinity of a high-
performance military aircraft yields equivalent source reconstructions over a range of engine …

Measurements of full-scale high-performance military aircraft reveal phenomena that are not
widely seen at laboratory scales. However, recent modifications to large eddy-simulation …

Spatiospectral lobes are still-unexplained phenomena seen in noise radiation from multiple
high-performance aircraft. These lobes are observed as multiple peaks in noise spectra at a …

Broadband shock-associated noise (BBSAN) is a prominent noise component from
nonideally expanded jets in the forward and sideline directions. BBSAN from laboratory …