Results 21 to 30 of about 19,548 (308)
Aerodynamic Drag of Streamers and Flags [PDF]
Journal of Aircraft, 2005 Low-speed drag and flutter measurements of rectangular flags and streamers are presented. The streamers have aspect ratios between 10 and 30; the flag has an aspect ratio of 3.3. Operating Reynolds numbers are in the range from Re =2 × × 10 5 to 2 × × 10 6 .
A. C. Carruthers, A. Filippone
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Applied Sciences, 2022 Aerodynamic drag is a major cause of energy losses during alpine ski racing. Here we developed two models for monitoring the aerodynamic drag on elite alpine skiers in the technical disciplines.
Matej Majerič +4 more
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Study on Aerodynamic Drag Reduction by Plasma Jets for 600 km/h Vacuum Tube Train Sets
Machines, 2023 In order to break through the speed bottleneck, researchers envision using tubes to cover high-speed maglev trains and extract some of the air inside the tubes, creating a low-density environment on the ground, greatly reducing the aerodynamic drag of ...
Ang Li +5 more
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Aerodynamic drag analysis of runners
Medicine & Science in Sports & Exercise, 1976 A model is presented for the determination of aerodynamic drag forces on runners. The model consists of a series of conjugated circular cylinders, to stimulate the trunk and appendages, and a sphere to stimulate the head. Results are presented for three runners representing respectively, adult American males in the 2.5, 50 and 97.5 percentiles of the ...
J R, Shanebrook, R D, Jaszczak
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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.
Canuto, Enrico
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Aerodynamic drag of modern soccer balls [PDF]
SpringerPlus, 2013 Soccer balls such as the Adidas Roteiro that have been used in soccer tournaments thus far had 32 pentagonal and hexagonal panels. Recently, the Adidas Teamgeist II and Adidas Jabulani, respectively having 14 and 8 panels, have been used at tournaments; the aerodynamic characteristics of these balls have not yet been verified. Now, the Adidas Tango 12,
Asai, Takeshi, Seo, Kazuya
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The effect of droplet size and liquid water content on ice accretion and aerodynamic coefficients of tower legs [PDF]
, 2013 An experimental study was conducted to examine the effects of varying the cloud characteristics on ice accretion on tower legs and on the aerodynamic coefficients around the ice-covered legs.
Van Dyke, P. +3 more
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Aerodynamics and Drag of a Car
Highlights in Science, Engineering and Technology, 2023 According to Chinese economic development and human life improvement, the vehicle, as the most important transportation, goes into common people’s life gradually. The following problems of energy are highlighted day by day. In Chinese Manufacturing 2025, the idea of energy-saving and new energy vehicle was pointed out as an important development area ...
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Aerodynamic drag reduction in a vehicle based on efficient global optimisation
The Journal of Engineering, 2018 Vehicle aerodynamic shape optimisation is a typical non-linear and computationally expensive black box problem, which is severely limited by time and cost of the objective function evaluations during the global optimisation process.
Chengping Yan +4 more
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Aerodynamic Robust Design Research Using Adjoint-Based Optimization under Operating Uncertainties
Aerospace, 2023 Robust optimization design (ROD) is playing an increasingly significant role in aerodynamic shape optimization and aircraft design. However, an efficient ROD framework that couples uncertainty quantification (UQ) and a powerful optimization algorithm for
Yuhang Ma +5 more
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