Acoustic and aerodynamic performance of a 6-foot-diameter fan for turbofan engines. 2 - Performance of QF-1 fan in nacelle without acoustic suppression [PDF]
Low noise turbofan engine without aerodynamic blade ...
Balombin, J. R. +2 more
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Acoustic evaluation of a novel swept-rotor fan [PDF]
Inlet noise and aerodynamic performance are presented for a high tip speed fan designed with rotor blade leading edge sweep that gives a subsonic component of inlet Mach number normal to the edge at all radii. The intent of the design was to minimize the
Lucas, J. G. +2 more
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Aeroacoustic test system design and experimental research for counter-rotating propeller
Hangkong gongcheng jinzhanThe aerodynamic noise test of counter-rotating propellers in wind tunnels has the problems of difficult time coordination and high cost. The aerodynamic noise test system of counter-rotating propellers，which is capable of simulating the driving state of ...
CAO Qi +4 more
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Complexity, 2018 Regarding the continuous development of high-speed trains and the increase of running speeds, the aerodynamic design of high-speed trains has become significantly important, while reduction of drag and noise comprises a significant challenge in order to ...
He-xuan Hu, Bo Tang, Ye Zhang
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Aerodynamic noise research support Quarterly progress report, Jan. - Mar. 1966 [PDF]
Aerodynamic noise research - acoustic environment due to separated flows and oscillating shocks and flow visualization experiments with supersonic separated turbulent ...
Lowson, M. V.
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Active Control of Aerodynamic Feedback Noise from a Small Step on a Backward-facing Step [PDF]
, 2007 In order to reduce an aerodynamic tonal noise from a rear-view mirror, active control technique with oscillating jets was utilized. Since the aerodynamic tonal noise of rear-view mirror was generated by a small perturbation caused by a small step on a ...
Honda, Taku +3 more
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Drag-free and attitude control for the GOCE satellite [PDF]
, 2008 The paper concerns Drag-Free and Attitude Control of the European satellite Gravity field and steady-state Ocean Circulation Explorer (GOCE) during the science phase.
Aguirre-Martinez +13 more
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MULTI-OBJECTIVE OPTIMIZATION DESIGN OF MW WIND TURBINE AIRFOILS
Jixie qiangdu, 2020 With the development of wind power generation technology,the requirements for various performances of wind turbines are higher. Aerodynamic noise problem has become a key research direction of the wind power industry.
LI YingJue, WEI KeXiang, ZHOU Zhou
doaj
Complexity, 2018 Pantographs are important devices on high-speed trains. When a train runs at a high speed, concave and convex parts of the train cause serious airflow disturbances and result in flow separation, eddy shedding, and breakdown. A strong fluctuation pressure
Xiaoqi Sun, Han Xiao
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A study of the local pressure field in turbulent shear flow and its relation to aerodynamic noise generation Semiannual status report, 1 Aug. 1970 - 31 Jan. 1971 [PDF]
Relation of Eulerian and Lagrangian structure of pseudosound pressure and velocity fields in turbulent shear flow to aerodynamic noise ...
Jones, B. G., Spencer, B. W.
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