|
|
 |
 |
|
|
|
Selected Navigations:
Author >
[x]
|
Sort results by:
|
|
|
There are a total of 45 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
|
Inlet noise suppressor performance with a turbojet engine as the noise source
Author(s): Acker, L. W.; Feiler, C. E.; Groeneweg, J. F.
Abstract: Inlet noise suppressors having perforated plate over honeycomb wall construction evaluated over range of passage heights and engine speeds using turbojet engine as noise source
NASA Center: Glenn Research Center
Publication Year: 1971
Added to NTRS: 2005-08-25
Accession Number: 71N31096; Document ID: 19710021620; Report Number: E-6181, NASA-TN-D-6395
Unsteady flowfield of a propfan at takeoff conditions
Author(s): Nallasamy, M.; Groeneweg, J. F.
Abstract: The unsteady flowfield of a propfan operation at takeoff conditions with angular inflow is examined by solving the three-dimensional Euler equations. The operating conditions considered are: Mach no. = 0.31, advance ratio = ...
NASA Center: Glenn Research Center
Publication Year: 1991
Added to NTRS: 2005-08-25
Accession Number: 91N32075; Document ID: 19910022761; Report Number: E-6540, NAS 1.15:105223, NASA-TM-105223
Unsteady blade-surface pressures on a large-scale advanced propeller: Prediction and data
Author(s): Nallasamy, M.; Groeneweg, J. F.
Abstract: An unsteady 3-D Euler analysis technique is employed to compute the flow field of an advanced propeller operating at an angle of attack. The predicted blade pressure waveforms are compared with wind tunnel data at two Mach ...
NASA Center: Glenn Research Center
Publication Year: 1990
Added to NTRS: 2005-08-25
Accession Number: 91N11799; Document ID: 19910002486; Report Number: E-5630, NAS 1.15:103218, NASA-TM-103218
Prediction of unsteady blade surface pressures on an advanced propeller at an angle of attack
Author(s): Nallasamy, M.; Groeneweg, J. F.
Abstract: The numerical solution of the unsteady, three-dimensional, Euler equations is considered in order to obtain the blade surface pressures of an advanced propeller at an angle of attack. The specific configuration considered is ...
NASA Center: Glenn Research Center
Publication Year: 1989
Added to NTRS: 2005-08-25
Accession Number: 90N12560; Document ID: 19900003244; Report Number: AIAA PAPER 89-1060, E-5108, NAS 1.15:102374, NASA-TM-102374
Near-field noise of a single-rotation propfan at an angle of attack
Author(s): Nallasamy, M.; Envia, E.; Clark, B. J.; Groeneweg, J. F.
Abstract: The near field noise characteristics of a propfan operating at an angle of attack are examined utilizing the unsteady pressure field obtained from a 3-D Euler simulation of the propfan flowfield. The near field noise is ...
NASA Center: Glenn Research Center
Publication Year: 1990
Added to NTRS: 2005-08-25
Accession Number: 91N12316; Document ID: 19910003003; Report Number: AIAA PAPER 90-3953, E-5805, NAS 1.15:103645, NASA-TM-103645
Analytical and physical modeling program for the NASA Lewis Research Center's Altitude Wind Tunnel (AWT)
Author(s): Abbott, J. M.; Diedrich, J. H.; Groeneweg, J. F.; Povinelli, L. A.; Reid, L.; Reinmann, J. J.; Szuch, J. R.
Abstract: An effort is currently underway at the NASA Lewis Research Center to rehabilitate and extend the capabilities of the Altitude Wind Tunnel (AWT). This extended capability will include a maximum test section Mach number of ...
NASA Center: Glenn Research Center
Publication Year: 1985
Added to NTRS: 2004-11-03
Accession Number: 85A19709; Document ID: 19850037558; Report Number: AIAA PAPER 85-0379
Summary of forward velocity effects on fan noise
Author(s): Feiler, C. E.; Groeneweg, J. F.
Abstract: Available experimental data comparing the in-flight and static behavior of fan noise are reviewed. These results are then compared with recent data obtained for a fan stage tested with forward velocity in a low speed wind ...
NASA Center: Glenn Research Center
Publication Year: 1977
Added to NTRS: 2004-11-03
Accession Number: 77N32159; Document ID: 19770025215; Report Number: E-9209, NASA-TM-73722
Effects of inflow distortion profiles on fan tone noise calculated using a 3-D theory
Author(s): Kobayshi, H.; Groeneweg, J. F.
Abstract: Calculations of the fan tone acoustic power and modal structure generated by complex distortions in axial inflow velocity are presented. The model used treats the rotor as a rotating three-dimensional cascade and calculates ...
NASA Center: Glenn Research Center
Publication Year: 1979
Added to NTRS: 2004-11-03
Accession Number: 79A26911; Document ID: 19790042898; Report Number: AIAA PAPER 79-0577
Fan noise suppression
Author(s): Feiler, C. E.; Groeneweg, J. F.; Rice, E. J.; Smith, E. B.; Tucker, R. H.
Abstract: The principal suppressor parameters and their relationships have been used to formulate a suppressor design methodology which has been applied to the design of several full-scale suppressors. Tests of these suppressors on ...
NASA Center: Glenn Research Center
Publication Year: 1972
Added to NTRS: 2004-11-03
Accession Number: 73N12015; Document ID: 19730003288
High-speed propeller noise predictions - Effects of boundary conditions used in blade loading calculations
Author(s): Nallasamy, M.; Clark, B. J.; Groeneweg, J. F.
Abstract: No Abstract Available
NASA Center: Glenn Research Center
Publication Year: 1988
Added to NTRS: 2004-11-03
Accession Number: 88A36270; Document ID: 19880049043
|
|
|
|
|
