Results 251 to 260 of about 83,922 (304)

CFD-based aerodynamic optimization of the fairing for a high-speed elevator. [PDF]

Sci Rep
Shen X, Wang A, Liu W, Wang R.
europepmc   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Aerodynamic Drag Prediction of Helicopter Fuselage

Journal of Aircraft, 2001
A summary of investigations into predictions of the aerodynamic drag of a modular helicopter fuselage (Eurocopter Dauphin DGV 200) is presented. Drag results are shown for two different configurations, Reynolds numbers up to 6 × 107 (flight conditions), with and without support structure of the wind-tunnel model.
Filippone, A., Michelsen, J. A.
openaire   +1 more source

Aerodynamic Drag and Drag Reduction

41st Aerospace Sciences Meeting and Exhibit, 2003
An assessment of the role of fluid dynamic resistance and/or aerodynamic drag and the relationship to energy use in the United States is presented. Existing data indicates that up to 25% of the total energy consumed in the United States is used to overcome aerodynamic drag, 27% of the total energy used in the United States is consumed by transportation
openaire   +1 more source

Damping and Aerodynamic Drag

2021
The effects of damping and/or aerodynamic drag are addressed. We begin with linear damping. Much of the material deals with damped oscillators (mass–spring–dashpot systems), for which three cases are considered: (i) zero forcing, (ii) periodic forcing and (iii) arbitrary forcing. Illustrative examples include a simple test to find out when it's time to
openaire   +1 more source

Aerodynamic Drag of Perforated Plates

Nature, 1957
WE have recently conducted wind-tunnel experiments to determine the aerodynamic drag of perforated plates at zero incidence by the wake transverse method. The plates have no protuberances, yet they are aerodynamically rough and give a drag comparable with that of plates covered with protruding roughness of the same size and spacing as the holes.
J. R. D. FRANCIS, P. MINTON
openaire   +1 more source

Aerodynamics –Drag

2008
Abstract The aerodynamics of golf balls is an intriguing subject and, as we shall see, it holds several surprises. The most obvious effect of the air on the flight of the ball arises when there is a strong wind. A side wind can turn a shot aimed at the fairway into a search for the ball in the rough grass.
openaire   +1 more source

Reduction of Aerodynamic Drag

1981
Abstract : A study is being made of the effect on aerodynamic drag of boundary layer irradiation by radioactive sources. A blow-down wind tunnel and a skin friction drag balance have been designed and constructed. The balance is of the null-position type, and is operated using an automatic control system to maintain the null position of the drag plate.
J. Clark, W. G. Rees, W. A. Wilby, J. E. Field   +3 more
openaire   +1 more source

Aerodynamic Drag of Streamers, Parafoils and Loops

43rd AIAA Aerospace Sciences Meeting and Exhibit, 2005
The drag and flapping characteristics of aerodynamic decelerators in a low speed flow are considered. Streamers, parafoils and loops were investigated. These systems had combinations of areas 0.025 m2, 0.05 m 2, 0.075 m2 and aspect-ratios 3.3, 10, 20, 30. A total of 12 models for each arrangement was tested.
Carruthers, A. C., Filippone, A.
openaire   +2 more sources

Smart Morphable Surfaces for Aerodynamic Drag Control

Advanced Materials, 2014
Smart Morphable Surfaces enable switchable and tunable aerodynamic drag reduction of bluff bodies. Their topography, resembling the morphology of golf balls, can be custom-generated through a wrinkling instability on a curved surface. Pneumatic actuation of these patterns results in the control of the drag coefficient of spherical samples by up to a ...
Terwagne, Denis, Brojan, Miha, Reis, Pedro M.   +2 more
openaire   +2 more sources

Aerodynamic drag in cycling: methods of assessment

Sports Biomechanics, 2011
When cycling on level ground at a speed greater than 14 m/s, aerodynamic drag is the most important resistive force. About 90% of the total mechanical power output is necessary to overcome it. Aerodynamic drag is mainly affected by the effective frontal area which is the product of the projected frontal area and the coefficient of drag.
Pierre, Debraux, Frederic, Grappe, Aneliya V, Manolova, William, Bertucci   +3 more
openaire   +2 more sources