Search Results - "Wall, Alan T"

Acoustic intensity near a high-powered military jet aircraft by Stout, Trevor A, Gee, Kent L, Neilsen, Tracianne B, Wall, Alan T, James, Michael M

“…The spatial variation in vector acoustic intensity has been calculated between 100 and 3000 Hz near a high-performance military aircraft. With one engine of a…”
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Near-field acoustical holography and acoustic power analysis of a simulated, highly heated supersonic jet by Leete, Kevin M., Gee, Kent L., Liu, Junhui, Wall, Alan T.

“…Although near-field acoustical holography (NAH) and acoustic intensity analysis have previously been used to investigate the apparent jet noise sources…”
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Translating jet noise measurements to near-field level maps with nearest neighbor bilinear smoothing interpolation by Mobley, Frank S., Wall, Alan T., Campbell, Stephen C.

“…U.S. Department of Defense hearing conservation and noise limits standards require the definition of safe areas around all objects that emit noise and suggest…”
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Introduction to the special issue on supersonic jet noise by Wall, Alan T, Gee, Kent L, Morris, Philip J, Colonius, Tim, Lowe, K Todd

“…This editorial's goals are (1) to highlight a few key developments in supersonic jet and launch vehicle noise research over the past several decades while…”
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Similarity spectra analysis of high-performance jet aircraft noise by Neilsen, Tracianne B, Gee, Kent L, Wall, Alan T, James, Michael M

“…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…”
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Multisource statistically optimized near-field acoustical holography by Wall, Alan T, Gee, Kent L, Neilsen, Tracianne B

“…This paper presents a reduced-order approach to near-field acoustical holography (NAH) that allows the user to account for sound fields generated by multiple…”
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Cumulative noise exposure model for outdoor shooting ranges by Wall, Alan T., Wagner, Caleb M., Rasband, Reese D., Gee, Kent L., Murphy, William J.

“…An impulsive noise exposure model for outdoor military shooting ranges was created. The inputs to the model included spatial interpolation of noise exposure…”
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Military jet noise source imaging using multisource statistically optimized near-field acoustical holography by Wall, Alan T., Gee, Kent L., Neilsen, Tracianne B., McKinley, Richard L., James, Michael M.

“…The identification of acoustic sources is critical to targeted noise reduction efforts for jets on high-performance tactical aircraft. This paper describes the…”
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Broadband shock-associated noise from a high-performance military aircraft by Vaughn, Aaron B., Neilsen, Tracianne B., Gee, Kent L., Wall, Alan T., Micah Downing, J., James, Michael M.

“…Broadband shock-associated noise (BBSAN) is a prominent noise component from nonideally expanded jets in the forward and sideline directions. BBSAN from…”
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Source characterization of full-scale tactical jet noise from phased-array measurements by Harker, Blaine M., Gee, Kent L., Neilsen, Tracianne B., Wall, Alan T., James, Michael M.

“…Application of phased-array algorithms to acoustic measurements in the vicinity of a high-performance military aircraft yields equivalent source…”
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Partial-field decomposition analysis of full-scale supersonic jet noise using optimized-location virtual references by Wall, Alan T., Gee, Kent L., Leete, Kevin M., Neilsen, Tracianne B., Stout, Trevor A., James, Michael M.

“…Supersonic jet noise reduction efforts benefit from targeted source feature extraction and high-resolution acoustic imaging. Another useful tool for feature…”
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Characterizing distinct components of tactical aircraft noise sources by Van Komen, David F., Harker, Blaine M., Neilsen, Tracianne B., Gee, Kent L., Hales Swift, S., Wall, Alan T., Micah Downing, J., James, Michael M.

“…Noise from a tactical aircraft can impact operations due to concerns regarding military personnel noise exposure and community annoyance and disturbance. The…”
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Characterizing acoustic shocks in high-performance jet aircraft flyover noise by Reichman, Brent O., Gee, Kent L., Neilsen, Tracianne B., Downing, J. Micah, James, Michael M., Wall, Alan T., McInerny, Sally Anne

“…Acoustic shocks have been previously documented in high-amplitude jet noise, including both the near and far fields of military jet aircraft. However, previous…”
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Sound power and acoustic efficiency of an installed GE F404 jet engine by Christian, Matthew A, Gee, Kent L, Streeter, Jacob B, Wall, Alan T, Campbell, Steven C

“…Classical jet noise theory indicates that radiated sound power is proportional to the jet velocity raised to the eighth and third powers for subsonic and…”
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Near-field shock formation in noise propagation from a high-power jet aircraft by Gee, Kent L, Neilsen, Tracianne B, Downing, J Micah, James, Michael M, McKinley, Richard L, McKinley, Robert C, Wall, Alan T

“…Noise measurements near the F-35A Joint Strike Fighter at military power are analyzed via spatial maps of overall and band pressure levels and skewness…”
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Cylindrical acoustical holography applied to full-scale jet noise by Wall, Alan T, Gee, Kent L, Neilsen, Tracianne B, Krueger, David W, James, Michael M

“…Near-field acoustical holography methods are used to predict sound radiation from an engine installed on a high-performance military fighter aircraft…”
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On autocorrelation analysis of jet noise by Harker, Blaine M, Gee, Kent L, Neilsen, Tracianne B, Wall, Alan T, McInerny, Sally A, James, Michael M

“…Meaningful use of the autocorrelation in jet noise analysis is examined. The effect of peak frequency on the autocorrelation function width is removed through…”
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Coherence length as a figure of merit in multireference near-field acoustical holography by WALL, Alan T, GARDNER, Michael D, GEE, Kent L, NEILSEN, Tracianne B

“…Multireference partial field decomposition (PFD) can be used to generate coherent holograms for near-field acoustical holography measurements. PFD is most…”
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A look into far-field rocket noise modeling: Approaches and potential sources of error by Rasband, Reese, Wall, Alan T.

“…In recent years, rocket launches have elevated from novelty to being seen as means of transportation, exploration, and delivery. Defense, commercial, and…”
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Initial observations and insights from a full-scale static rocket engine firing by Rasband, Reese D., Wall, Alan T.

“…With increased space travel focus and launch cadence, many commercial and public entities are looking to take advantage of this form of transit. One such use…”
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