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Effect of flow-deflecting-gap blade on aerodynamic characteristic of vertical axis wind turbines
, 2020In order to improve stall characteristics more effectively or eliminate dynamic stall in a revolution of vertical axis wind turbine, three kinds of novel flow-deflecting-gap (FDG) blade were designed and investigated numerically, including two-side FDG ...
Haitian Zhu +3 more
semanticscholar +1 more source
Aerodynamic characteristics of trills
The Journal of the Acoustical Society of America, 1998What are the aerodynamic conditions required for trills? To find out we had two subjects produce steady-state voiced, voiceless, and ejective alveolar trills. The backpressure during trills was intermittently bled with a tube of varying diameter (and thus impedance) inserted in the speaker’s mouth via the buccal sulcus and gap behind the back molars ...
Maria-Josep Sole +2 more
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The aerodynamic characteristics of cat allergen
Clinical & Experimental Allergy, 1993SummaryTo further characterize airborne cat allergen and a newly established cat challenge facility, airborne Fel d I levels and particle size distributions were studied in both the cat challenge room and home environments under different conditions of ventilation and physical activity.
R A, Wood, A N, Laheri, P A, Eggleston
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Journal of Aircraft, 2019
Wingtip-mounted propellers installed in a tractor configuration can decrease the wing induced drag by attenuating the wingtip vortex by the propeller slipstream.
T. Sinnige +4 more
semanticscholar +1 more source
Wingtip-mounted propellers installed in a tractor configuration can decrease the wing induced drag by attenuating the wingtip vortex by the propeller slipstream.
T. Sinnige +4 more
semanticscholar +1 more source
Aerodynamic Characteristics of Tracheostomy Speaking Valves
Journal of Speech, Language, and Hearing Research, 1993Pressure-flow characteristics were determined for four different one-way valves used for speech production in the patient who has had a tracheotomy. Each valve was tested at steady-state flow rates of 150, 250, 350, and 450 ml/sec in isolation and attached to a tracheostomy tube. Results indicated significant differences in resistance among the valves.
L, Fornataro-Clerici, D J, Zajac
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Aerodynamic Characteristics of Blerak Winglet
Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 2023The induced drag created by wingtip vortices has a significant impact on aircraft performance. Winglets are wingtip extensions that are intended to reduce the creation of vortices and increase the fuel efficiency. The present study is based on analyzing different winglets planform for aircraft at various angles of attack (AOA) to improve the ...
null Mohamed Hussain Farook +1 more
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3D aerodynamic admittances of streamlined box bridge decks
Engineering structures, 2019Via wind tunnel tests, the fluctuating pressures on the surfaces of three streamlined box bridge models are measured in two turbulent flow-fields with different turbulence characteristic parameters.
Cunming Ma +3 more
semanticscholar +1 more source
Nonlinear Aerodynamic Characteristics of Sounding Rockets J
Journal of Spacecraft and Rockets, 1970Sounding rockets nonlinear aerodynamic characteristics from full scale and supersonic wind tunnel free flight data, using wobble ...
C. INGRAM, J. NICOLAIDES, D. TARKOWSKI
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Aerodynamic inverse design using multifidelity models and manifold mapping
Aerospace Science and Technology, 2019Aerodynamic inverse design is proposed using multifidelity models and the manifold mapping (MM) technique. Aerodynamic inverse design aims at achieving a target performance characteristic, such as a pressure coefficient distribution of an airfoil or ...
Xiaosong Du, J. Ren, Leifur Þ. Leifsson
semanticscholar +1 more source