Results 81 to 90 of about 1,929,704 (249)
Aerodynamic performance of scarf inlets [PDF]
A scarf inlet is characterized by having a longer lower lip than upper lip leading to both aerodynamic and acoustic advantages. Aerodynamically, a scarf inlet has higher angle of attack capability and is less likely to ingest foreign objects while the ...
Abbott, J. M.
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Chengshi guidao jiaotong yanjiuObjectiveThe enclosure condition of undercarriage equipment directly affects the aerodynamic shape of the train, which in turn affects the aerodynamic performance of the whole train. Therefore, it is necessary to carry out a research on the impact of the
Keming SHANG +4 more
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Numerical Study on the Aerodynamic Performance and Noise of Composite Bionic Airfoils
FluidsBionic airfoils are an effective method to improve aerodynamic performance and reduce the noise of wind turbine blades. To explore the impact of the lower surface of bird wing airfoils on the aerodynamic performance and noise of blades, this study ...
Shunlong Su +3 more
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Acoustic tests of duct-burning turbofan jet noise simulation [PDF]
The results of a static acoustic and aerodynamic performance, model-scale test program on coannular unsuppressed and multielement fan suppressed nozzle configurations are summarized.
Brausch, J. F. +5 more
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Aeronautical noise suppression at transonic Mach numbers [PDF]
The measurement of wind tunnel background pressure fluctuations in a Ludwig Tube is discussed. The measurements are to provide improved unsteady aerodynamic data for the design of aeronautical vehicles. The preliminary results of the facility calibration
Mccanless, G. F., Jr.
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Investigation to define the propagation characteristics of a finite amplitude acoustic pressure wave Final report [PDF]
Aerodynamic noise generation by finite amplitude pressure wave propagation through entropy producing ...
Cottrell, J. W., Peter, A. C.
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State-space model identification and feedback control of unsteady aerodynamic forces
, 2014 Unsteady aerodynamic models are necessary to accurately simulate forces and develop feedback controllers for wings in agile motion; however, these models are often high dimensional or incompatible with modern control techniques.
Brunton, Steven L. +2 more
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Spectral techniques in jet noise theory [PDF]
Spectral analysis techniques applied to Lighthill aerodynamic sound equation for unified jet noise ...
Lowson, M. V., Pao, S. P.
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JSME international journal. Ser. 3, Vibration, control engineering, engineering for industry, 1989 This paper presents the results of an investigation into the effectiveness of a circular cutting tool with a slit tooth on aerodynamic noise reduction. The aerodynamic noise from a circular cutting tool is caused by vortices generated behind a tooth. It is possible to reduce the aerodynamic noise by controlling the vortices.
Kensaku YANAGIMOTO +2 more
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Computational study of vortex shedding and its effects on asymmetrical airfoil with gurney flap
International Journal of ThermofluidsThe rise in airport and airline operations has increased compelling interest in aircraft noise. The aerodynamic noise initiated by the high-lifting devices is now comparable to the aircraft engine's noise.
Balram Mandal +5 more
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