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 …

This study investigates source-related noise characteristics of the Falcon 9, a modern launch
vehicle with a high operational tempo. Empirical prediction of the noise characteristics of …

For an adequate understanding of the broadband acoustic phenomena generated by a
rocket exhaust jet impinging on a flame deflector, this study experimentally clarifies the …

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

The phase and amplitude gradient estimator (PAGE) method for active acoustic intensity
uses pairwise microphone transfer functions to obtain the phase gradient, which improves …

Sound intensity measurements using two microphones have traditionally been processed
using a cross-spectral method with inherent error in the finite-sum and finite-difference …

Anechoic laboratory experiments were conducted to validate the recently developed phase
and amplitude gradient estimator1 (PAGE) method in a controlled environment. The PAGE …

With the renewed interest in space exploration from governments and private businesses,
the number of launch vehicles, launch pads, and the frequency of launches around the …

Energy quantities, which are calculated from pressure and particle velocity, yield a great
deal of information about acoustic fields. Errors in pressure or particle velocity estimation …

Obtaining accurate estimates of acoustic intensity is vital for intensity-based sound power
measurements, as well as source characterization and location. A method for estimating …