Results 211 to 220 of about 343,611 (255)
Some of the next articles are maybe not open access.
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.
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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.
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Smart Morphable Surfaces for Aerodynamic Drag Control [PDF]
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 +2 more
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Aerodynamic Drag of Perforated Plates
Nature, 1957WE 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
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Prediction of Aerodynamic Drag.
1984Abstract : Drag prediction is the most important and challenging problem in aerodynamics. Experimental, empirical, analytical and numerical approaches, singly and in concert, have addressed this problem with varying degrees of success (and notable failures).
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The Effects of Wheel Design on the Aerodynamic Drag of Passenger Vehicles
SAE technical paper series, 2019Approximately 25 % of a passenger vehicle’s aerodynamic drag comes directly or indirectly from its wheels, indicating that the rim geometry is highly relevant for increasing the vehicle’s overall energy efficiency.
Adam Brandt +3 more
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Hardware and GNC solutions for controlled spacecraft re-entry using aerodynamic drag
Acta Astronautica, 2019Traditionally, controlled spacecraft re-entries have been conducted using propulsive de-orbit burns which are risky, expensive, and may not be possible for all vehicles.
Sanny R. Omar, R. Bevilacqua
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Control of Aerodynamic Drag and Heating of Nose Cones Through Taper Spikes
Journal of Spacecraft and Rockets, 2019The present work numerically and experimentally investigates Mach 5.8 flow past passively modified nose cone configurations such as taper/stepped taper spiked, spherically blunted, and parabolic nose cones at a fineness ratio of 3.6 and zero angle of ...
Ashish Narayan +5 more
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Aerodynamic Drag Reduction of High-Speed Train Nose With Bionic Round Pits
Computing in science & engineering (Print), 2019The aerodynamic drag forces of a high-speed train with or without round pits were investigated. The aerodynamic drag reduction is mainly due to the pressure difference.
Tian Li, D. Qin, Jiye Zhang, Ming Li
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Aerodynamic Drag on Vehicles in Tunnels
Journal of Basic Engineering, 1969The purpose of this study was to investigate the aerodynamic drag on vehicles moving in guideways of varying degrees of enclosure. The reason for this study was that several potential high speed ground transport system concepts involve high speed motion of vehicles in enclosed guideways for significant portions of their travel time.
S. William Gouse +3 more
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Cycling Aerodynamics: The Effect of Rider Position on Aerodynamic Drag
Volume 4A: Dynamics, Vibration and Control, 2013Competitive cyclists seek to maximize their efficiency by minimizing the influence of resistive forces. At the high speeds maintained during competition, aerodynamic drag is the primary resistive force. This paper investigates the influence of a cyclist’s body position using models of aerodynamic drag and elucidates the time benefit of various body ...
Alexander B. Fulton +3 more
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