Understanding and Reduction of Cruise Jet Noise at Model and Full Scale

2009 ◽  
Author(s):  
Jerome Huber ◽  
Kevin Britchford ◽  
Estelle Laurendeau ◽  
Vincent Fleury ◽  
Jean Bulté ◽  
...  
Keyword(s):  
Jet Noise ◽  
Full Scale

Partial-field decomposition analysis of full-scale supersonic jet noise using optimized-location virtual references

2018 ◽  
Vol 144 (3) ◽  
pp. 1356-1367 ◽  
Author(s):  
Alan T. Wall ◽  
Kent L. Gee ◽  
Kevin M. Leete ◽  
Tracianne B. Neilsen ◽  
Trevor A. Stout ◽  
...  
Keyword(s):  
Supersonic Jet ◽  
Decomposition Analysis ◽  
Jet Noise ◽  
Full Scale ◽  
Supersonic Jet Noise

Source characterization of full-scale jet noise using vector intensity

2015 ◽  
Vol 138 (3) ◽  
pp. 1916-1916
Author(s):  
Trevor A. Stout ◽  
Kent L. Gee ◽  
Tracianne B. Neilsen ◽  
Alan T. Wall ◽  
Michael M. James
Keyword(s):  
Jet Noise ◽  
Full Scale ◽  
Source Characterization

Designing Clean Jet-Noise Facilities and Making Accurate Jet-Noise Measurements

2003 ◽  
Vol 2 (3) ◽  
pp. 371-412 ◽  
Author(s):  
K. K. Ahuja
Keyword(s):  
Frequency Response ◽  
Internal Noise ◽  
Jet Noise ◽  
Noise Spectrum ◽  
Full Scale ◽  
Research Facility ◽  
High Quality ◽  
Jet Engine ◽  
Noise Measurements ◽  
Noise Data

The main objective of this paper is to provide guidelines for designing and calibrating a high quality, static, jet-noise research facility and making high-quality jet noise measurements. Particular emphasis is placed on methodology for determining if internal noise is dominant in the jet noise spectrum. A section of this document is devoted to clarifying the terminology associated with microphone frequency response corrections and providing a step-wise description of other corrections that must be applied to the measured raw spectra before the jet noise data can be considered accurate and ready for use for extrapolation to full-scale jet engine noise.

Cylindrical acoustical holography applied to full-scale jet noise

2014 ◽  
Vol 136 (3) ◽  
pp. 1120-1128 ◽  
Author(s):  
Alan T. Wall ◽  
Kent L. Gee ◽  
Tracianne B. Neilsen ◽  
David W. Krueger ◽  
Michael M. James
Keyword(s):  
Jet Noise ◽  
Full Scale ◽  
Acoustical Holography

Comparison of holography, beamforming, and intensity-based inverse measurements on full-scale jet noise sources. Part I: Numerical investigations

2015 ◽  
Vol 138 (3) ◽  
pp. 1917-1917
Author(s):  
Alan T. Wall ◽  
Blaine M. Harker ◽  
Trevor A. Stout ◽  
Tracianne B. Neilsen ◽  
Kent L. Gee
Keyword(s):  
Jet Noise ◽  
Full Scale ◽  
Noise Sources ◽  
Numerical Investigations

scholarly journals Data Quality Assurance for Supersonic Jet Noise Measurements

2010 ◽  
Author(s):  
Clifford Brown ◽  
Brenda Henderson ◽  
James Bridges
Keyword(s):  
Data Quality ◽  
High Speed ◽  
Supersonic Jet ◽  
Jet Noise ◽  
Full Scale ◽  
Primary Concern ◽  
Noise Sources ◽  
Supersonic Jet Noise ◽  
Noise Data ◽  
The Impact

The noise created by a supersonic aircraft is a primary concern in the design of future high-speed planes. The jet noise reduction technologies required on these aircraft will be developed using scale-models mounted to experimental jet rigs designed to simulate the exhaust gases from a full-scale jet engine. The jet noise data collected in these experiments must accurately predict the noise levels produced by the full-scale hardware in order to be a useful development tool. A methodology has been adopted at the NASA Glenn Research Center’s Aero-Acoustic Propulsion Laboratory to insure the quality of the supersonic jet noise data acquired from the facility’s High Flow Jet Exit Rig so that it can be used to develop future nozzle technologies that reduce supersonic jet noise. The methodology relies on mitigating extraneous noise sources, examining the impact of measurement location on the acoustic results, and investigating the facility independence of the measurements. The methodology is documented here as a basis for validating future improvements and its limitations are noted so that they do not affect the data analysis. Maintaining a high quality jet noise laboratory is an ongoing process. By carefully examining the data produced and continually following this methodology, data quality can be maintained and improved over time.

scholarly journals Source characterization of full-scale tactical jet noise from phased-array measurements

2019 ◽  
Vol 146 (1) ◽  
pp. 665-680
Author(s):  
Blaine M. Harker ◽  
Kent L. Gee ◽  
Tracianne B. Neilsen ◽  
Alan T. Wall ◽  
Michael M. James
Keyword(s):  
Phased Array ◽  
Jet Noise ◽  
Full Scale ◽  
Source Characterization ◽  
Array Measurements

Scaling and extrapolating small-scale in-flow wind tunnel jet noise to full-scale flyover jet noise

1997 ◽  
Author(s):  
Christopher Allen ◽  
Paul Soderman ◽  
Christopher Allen ◽  
Paul Soderman
Keyword(s):  
Wind Tunnel ◽  
Jet Noise ◽  
Full Scale ◽  
Small Scale

Phased-array measurements of full-scale military jet noise

2014 ◽  
Author(s):  
Blaine M. Harker ◽  
Kent L. Gee ◽  
Tracianne B. Neilsen ◽  
Alan T. Wall ◽  
Michael M. James
Keyword(s):  
Phased Array ◽  
Jet Noise ◽  
Full Scale ◽  
Array Measurements
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