Acoustic properties
Label
Acoustic properties
Name
Acoustic properties
Source
nasat
Focus
Actions
Incoming Resources
- Subject of40
- Vibration propagation of gear dynamics in a gear-bearing-housing system using mathematical modeling and finite element analysis, Robert G. Parker [and three others]
- Acoustic performance of the GEAE UPS research fan in the NASA Glenn 9- by 15-foot low-speed wind tunnel, Richard P. Woodward and Christopher E. Hughes
- Performance optimization of a rotor alone Nacelle for acoustic fan testing, C.C. Cunningham, W.K. Thompson, and C.E. Hughes
- NASA Engineering and Safety Center (NESC) enhanced melamine (ML) foam acoustic test (NEMFAT), Anne M. McNelis, William O. Hughes, and Mark E. McNelis
- The development of the acoustic design of NASA Glenn Research Center's new reverberant acoustic test facility, William O. Hughes [and three others]
- Large Civil Tiltrotor (LCTR2) interior noise predictions due to turbulent boundary layer excitation, Ferdinand W. Grosveld
- Quiet High Speed Fan II (QHSF II), final report, Karen Kontos, Don Weir, and Dave Ross
- Simulated tip rub testing of low-density metal foam, Cheryl L. Bowman, Michael G. Jones
- Hybrid wing body shielding studies using an ultrasonic configurable fan artificial noise source generating typical turbofan modes, Daniel L. Sutliff and Clifford A. Brown, Bruce E. Walker
- Acoustic performance of a real-time three-dimensional sound-reproduction system, Kenneth J. Faller II, Stephen A. Rizzi, Aric R. Aumann
- Acoustic test characterization of melamine foam for usage in NASA's payload fairing acoustic attenuation systems, William O. Hughes, Anne M. McNelis, and Mark E. McNelis
- Rotating rake turbofan duct mode measurement system, Daniel L. Sutliff ; prepared for NOISE-CON 2005 sponsored by the Institute of Noise Control Engineering, Minneapolis, Minnesota, October 17-19, 2005
- Recent improvements to the Acoustical Testing Laboratory at the NASA Glenn Research Center, Devin M. Podboy [and three others]
- Takeoff/approach noise for a model counterrotation propeller with a forward-swept upstream rotor, Richard P. Woodward, ... [and others]
- Microstructural characterization of metal foams, an examination of the applicability of the theoretical models for modeling foams, S.V. Raj
- Testing and analysis of sensor ports, M. Zhang [and three others]
- Fluidic actuation for aeropropulsive acoustic improvements, Mark Stone [and four others]
- The aerodynamic performance of an over-the-rotor liner with circumferential grooves on a high bypass ratio turbofan rotor, Richard F. Bozak, Christopher E. Hughes, James Buckley
- Application of an aligned and unaligned signal processing technique to investigate tones and broadband noise in fan and contra-rotating open rotor acoustic spectra, Jeffrey Hilton Miles and Lennart S. Hultgren
- Microstructural characterization of metal foams, an examination of the applicability of the theoretical models for modeling foams, S.V. Raj
- Acoustic absorption in porous materials, Maria A. Kuczmarski and James C. Johnston
- Acoustic performance of drive rig mufflers for model scale engine testing, David B. Stephens
- Inlet acoustic data from a high bypass ratio turbofan rotor in an internal flow component test facility, Richard F. Bozak
- The testing behind the test facility, the acoustic design of the NASA Glenn Research Center's world-class Reverberant Acoustic Test Facility, William O. Hughes ... [and others]
- Tones encountered with a coannular nozzle and a method for their suppression, Khairul B. Zaman [and three others]
- Benefits of swept and leaned stators for fan noise reduction, Richard P. Woodward [and three others]
- Acoustic methods used in the NASA Glenn 9-by 15-foot low-speed wind tunnel, Clifford A. Brown and David B. Stephens
- Acoustic testing of a high-tip-speed fan with bypass-duct liners--overview, Christopher J. Miller, David B. Stephens, and Daniel L. Sutliff
- Characteristics of residual mixing noise from internal fan/core mixers, Eugene A. Krejsa and Naseem H. Saiyed
- The alternative low noise fan, James H. Dittmar [and four others]
- Empennage noise shielding benefits for an open rotor transport, Jeffrey J. Berton ; prepared for the 17th Aeroacoustics Conference cosponsored by the American Institute of Aeronautics and Astronautics and the Confederation of European Aerospace Societies, Portland, Oregon, June 5-8, 2011
- Fission surface power technology development status, Donald T. Palac ... [and others] ; prepared for the Space 2009 Conference and Exposition sponsored by the American Institute of Aeronautics and Astronautics Pasadena, California, September 14-17, 2009
- NASA ETR Quiet Zone Probe Study, Larry A. Ticatch [and three others]
- Quiet, efficient fans for spaceflight, an overview of NASA's technology development plan, L. Danielle Koch
- Acoustic performance of novel fan noise reduction technologies for a high bypass model turbofan at simulated flight conditions, David M. Elliott, Richard P. Woodward, and Gary G. Podboy ; prepared for the 15th Aeroacoustics Conference (30th Aeroacoustics Conference) cosponsored by AIAA and CEAS Miami, Florida, May 11-13, 2009
- Design of quiet rotorcraft approach trajectories, Sharon L. Padula ... [and others]
- Large-scale Advanced Propfan (LAP) performance, acoustic and weight estimation, January, 1984, D. Parzych, [S. Cohen, A. Shenkman]
- Open rotor aeroacoustic modelling, Edmane Envia
- Acoustic efficiency of azimuthal modes in jet noise using chevron nozzles, Clifford A. Brown and James Bridges
- Acoustic mode measurements in the inlet of a model turbofan using a continuously rotating rake, Laurence J. Heidelberg and David G. Hall
Outgoing Resources
- Focus1