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 …

The Saturn V is a monument to one of mankind's greatest achievements: the human Moon
landings. However, online claims about this vehicle's impressive acoustics by well-meaning …

View Video Presentation: https://doi. org/10.2514/6.2021-1638. vid This paper describes
noise measurements taken of the new Boeing T-7A Red Hawk trainer aircraft, which uses a …

The skewness of the first time derivative of a pressure waveform, or derivative skewness,
has been used previously to describe the presence of shock-like content in jet and rocket …

Jets with Mach numbers $ M\gtrsim 1.5$ are well known to emit an intense, fricative, so-
called crackle sound, having steep compressions interspersed with weaker expansions that …

I. Introduction ne of the distinctive features visible in waveforms of supersonic jet noise is the
presence of acoustic shocks or large sudden increases in pressure. These shocks are often …

Crackle is a perceptual feature of supersonic jet noise that is related to the presence of
acoustic shocks. This study investigates the apparent source locations of the steepest …

The jet sound quality “crackle” has historically been studied and quantified using the
statistics of the pressure waveform. Some investigators have suggested crackle, and its …

The nonlinear evolution of high-amplitude broadband noise is important to the
psychoacoustic perception, usually annoyance, of high-speed jet noise. One method to …

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 …