A review of environmental barriers to obtaining adequate sleep in the military operational context
Introduction Sleep loss is ubiquitous in military settings, and it can be deleterious to
cognitive, physiological, and operational functioning. This is especially true in the military …
cognitive, physiological, and operational functioning. This is especially true in the military …
Aeroacoustics of volcanic jets: Acoustic power estimation and jet velocity dependence
A fundamental goal of volcano acoustics is to relate observed infrasonic signals to the
eruptive processes generating them. A link between acoustic power and volcanic gas exit …
eruptive processes generating them. A link between acoustic power and volcanic gas exit …
On cumulative nonlinear acoustic waveform distortions from high-speed jets
A model is proposed for predicting the presence of cumulative nonlinear distortions in the
acoustic waveforms produced by high-speed jet flows. The model relies on the conventional …
acoustic waveforms produced by high-speed jet flows. The model relies on the conventional …
Similarity spectra analysis of high-performance jet aircraft noise
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 …
found previously to represent mixing noise from large-scale and fine-scale turbulent …
Acoustic emissions from F-35 aircraft during ground run-up
ETR= engine thrust request, in% OASPL= overall sound pressure level, dB re 20 µPa OTO=
one-third octave, dB re 20 µPa ሺݐሻ= pressure waveform, in Pa ߲/߲ݐ= time derivative of …
one-third octave, dB re 20 µPa ሺݐሻ= pressure waveform, in Pa ߲/߲ݐ= time derivative of …
Piecewise-spreading regime model for calculating effective Gol'dberg numbers for supersonic jet noise
A method for calculating the effective Gol'dberg number for diverging waveforms is
presented, which leverages known features of a high-speed jet and its associated sound …
presented, which leverages known features of a high-speed jet and its associated sound …
On the convection velocity of source events related to supersonic jet crackle
An image analysis method is developed and applied to shadowgraph images of supersonic
jet flow to measure shock front propagation angles at numerous interrogation points …
jet flow to measure shock front propagation angles at numerous interrogation points …
Evolution of the derivative skewness for nonlinearly propagating waves
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 …
has been used previously to describe the presence of shock-like content in jet and rocket …
Noise reduction in supersonic jets exhausting over a simulated aircraft carrier deck
An innovative noise reduction method for supersonic exhaust jets was studied in a model-
scale aircraft carrier environment. Acoustic measurements of model exhaust jets with (and …
scale aircraft carrier environment. Acoustic measurements of model exhaust jets with (and …
[HTML][HTML] Source characterization of full-scale tactical jet noise from phased-array measurements
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 …
performance military aircraft yields equivalent source reconstructions over a range of engine …