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Engine noise
Noise reduction 27
Turbofan engines 18
Aeroacoustics 17
Jet aircraft noise 16
Aircraft noise 13
Aerodynamic noise 10
Airplanes 10
Noise 7
Noise prediction 7
Acoustic properties 6
Noise prediction (Aircraft) 6
Exhaust nozzles 5
Noise generators 5
Noise measurement 5
Rotors 5
Stators 5
Acoustic measurement 4
Annular ducts 4
Ducted fans 4
Engine inlets 4
Pressure distribution 4
Sound generators 4
Subsonic flow 4
Acoustic ducts 3
Acoustic propagation 3
Aerodynamic characteristics 3
Aircraft engines 3
Compressors 3
Computer programs 3

Phased array noise source localization measurements of an F404 nozzle plume at both full and model scale Gary G. Podboy, James E. Bridges, and Brenda S. Henderson ; prepared for th... by Podboy, Gary G.

Experimental investigation of an ejector-powered free-jet facility Mary Jo Long. by Long, Mary Jo

Acoustic mode measurements in the inlet of a model turbofan using a continuously rotating rake Laurence J. Heidelberg and David G. Hall. by Heidelberg, Laurence J.

Small Engine Technology (SET) task 23 ANOPP noise prediction for small engines wing reflection code / L. Lieber and D. Brown ; prepared for Langely Research Center under contract N... by Lieber, L.

Database of inlet and exhaust noise shielding for wedge-shaped airframe Carl H. Gerhold and Lorenzo R. Clark. by Gerhold, Carl H.

Theory for broadband noise of rotor and stator cascades with inhomogeneous inflow turbulence including effects of lean and sweep Donald B. Hanson ; prepared under contract NAS3-277... by Hanson, Donald B.

Recent developments in U.S. engine noise reduction research James Bridges, Edmane Envia, and Dennis Huff. by Bridges, James

Current wind tunnel capability and planned improvements at Lewis Research Center David N. Bowditch. by Bowditch, David N.

Turbofan aft duct suppressor study / by A.A. Syed [and four others] by Syed, A. A.

Database of inlet and exhaust noise shielding for wedge-shaped airframe / Carl H. Gerhold and Lorenzo R. Clark. by Gerhold, Carl H., Clark, Lorenzo R.

Enhanced core noise modeling for turbofan engines James R. Stone, Eugene A. Krejsa, and Bruce J. Clark. by Stone, James R.

A fan concept to meet the 2017 noise goals / James H. Dittmar. by Dittmar, James H.

Comparison of predicted low speed fan rotor/stator interaction modes to measured Daniel L. Sutliff, James Bridges, Edmane Envia. by Sutliff, Daniel L. (Daniel Linden), 1962-

Active noise control of low speed fan rotor-stator modes Daniel L. Sutliff [and others]

Aeroacoustic data for a high Reynolds number axisymmetric subsonic jet / Michael K. Ponton, Lawrence S. Ukeiley, Sang W. Lee. by Ponton, Michael K., Ukeiley, Lawrence S., Lee, Sang W.

AST critical propulsion and noise reduction technologies for future commercial subsonic engines separate-flow exhaust system noise reduction concept evaluation / B.A. Janardan [and...

Large Engine Technology (LET) task XXXVII low-bypass ratio mixed turbofan engine subsonic jet noise reduction program test report Joseph R. Hauser, Steven H. Zysman, and Thomas J.... by Hauser, Joseph R.

Separate flow nozzle test status meeting proceedings of a conference held at and sponsored by NASA Glenn Research Center, Cleveland, Ohio, September 9-10, 1997 / [Naseem H. Saiyed,...

Quiet high-speed fan Lysbeth Lieber, Russ Repp, and Donald S. Weir. by Lieber, Lysbeth

NASA Glenn's contributions to aircraft engine noise research / Dennis L. Huff. by Huff, Dennis L.

Search Results

Phased array noise source localization measurements of an F404 nozzle plume at both full and model scale Gary G. Podboy, James E. Bridges, and Brenda S. Henderson ; prepared for th... by Podboy, Gary G.

Experimental investigation of an ejector-powered free-jet facility Mary Jo Long. by Long, Mary Jo

Acoustic mode measurements in the inlet of a model turbofan using a continuously rotating rake Laurence J. Heidelberg and David G. Hall. by Heidelberg, Laurence J.

Small Engine Technology (SET) task 23 ANOPP noise prediction for small engines wing reflection code / L. Lieber and D. Brown ; prepared for Langely Research Center under contract N... by Lieber, L.

Database of inlet and exhaust noise shielding for wedge-shaped airframe Carl H. Gerhold and Lorenzo R. Clark. by Gerhold, Carl H.

Theory for broadband noise of rotor and stator cascades with inhomogeneous inflow turbulence including effects of lean and sweep Donald B. Hanson ; prepared under contract NAS3-277... by Hanson, Donald B.

Recent developments in U.S. engine noise reduction research James Bridges, Edmane Envia, and Dennis Huff. by Bridges, James

Current wind tunnel capability and planned improvements at Lewis Research Center David N. Bowditch. by Bowditch, David N.

Turbofan aft duct suppressor study / by A.A. Syed [and four others] by Syed, A. A.

Database of inlet and exhaust noise shielding for wedge-shaped airframe / Carl H. Gerhold and Lorenzo R. Clark. by Gerhold, Carl H., Clark, Lorenzo R.

Enhanced core noise modeling for turbofan engines James R. Stone, Eugene A. Krejsa, and Bruce J. Clark. by Stone, James R.

A fan concept to meet the 2017 noise goals / James H. Dittmar. by Dittmar, James H.

Comparison of predicted low speed fan rotor/stator interaction modes to measured Daniel L. Sutliff, James Bridges, Edmane Envia. by Sutliff, Daniel L. (Daniel Linden), 1962-

Active noise control of low speed fan rotor-stator modes Daniel L. Sutliff [and others]

Aeroacoustic data for a high Reynolds number axisymmetric subsonic jet / Michael K. Ponton, Lawrence S. Ukeiley, Sang W. Lee. by Ponton, Michael K., Ukeiley, Lawrence S., Lee, Sang W.

AST critical propulsion and noise reduction technologies for future commercial subsonic engines separate-flow exhaust system noise reduction concept evaluation / B.A. Janardan [and...

Large Engine Technology (LET) task XXXVII low-bypass ratio mixed turbofan engine subsonic jet noise reduction program test report Joseph R. Hauser, Steven H. Zysman, and Thomas J.... by Hauser, Joseph R.

Separate flow nozzle test status meeting proceedings of a conference held at and sponsored by NASA Glenn Research Center, Cleveland, Ohio, September 9-10, 1997 / [Naseem H. Saiyed,...

Quiet high-speed fan Lysbeth Lieber, Russ Repp, and Donald S. Weir. by Lieber, Lysbeth

NASA Glenn's contributions to aircraft engine noise research / Dennis L. Huff. by Huff, Dennis L.

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