Results 21 to 30 of about 3,078,462 (291)
An investigation of effect of control jets location and blowing pressure ratio to control base press
Journal of Thermal Engineering, 2020 The drag force is an essential factor in any projectile from road vehicles to rocket or aircraft. The total drag includes skin friction drag, wave drag and base drag. The base drag is the drag due to low pressure in the base region of the projectile.
Khizar PATHAN, Prakash DABEER, Sher KHAN
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On the Scale Size of the Aerodynamic Characteristics of a High-Speed Train [PDF]
Journal of Applied Fluid Mechanics, 2022 In the wind tunnel test of trains, the scale size changes the Reynolds numbers of trains, which may affect the aerodynamic characteristics of the train.
C. Chang, T. Li, D. Qin, J. Zhang
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Jurnal Ilmiah Pendidikan Fisika Al-Biruni, 2020 Linear air track is often used in physics learning for linear motion experiments because it can reduce friction between objects with trajectories. However, the use of air tracks for motion experiments in schools often does not care about aspects of air ...
Prasetyo Listiaji +4 more
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Drag on a fibre in a counterflow air stream [PDF]
PAMM, 2003 AbstractThis paper evaluates the drag on the surface of a fibre moving axially in a counterflow air stream. It is assumed that the fibre velocity is very much greater than the velocity of the air stream.
Brendan Redmond, John Harding
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Flexible conformable hydrophobized surfaces for turbulent flow drag reduction [PDF]
, 2015 In recent years extensive work has been focused onto using superhydrophobic surfaces for drag reduction applications. Superhydrophobic surfaces retain a gas layer, called a plastron, when submerged underwater in the Cassie-Baxter state with water in ...
Fairhurst, David +11 more
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Journal of Marine Science and EngineeringUnderwater drag reduction using superhydrophobic surfaces is a promising method due to its simplicity and low energy consumption. However, most attempts to obtain drag reduction using superhydrophobic surfaces have failed.
You Nie, Ding Weng, Jiadao Wang
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Form drag of ice ridges in winter Weddell Sea,Antarctica
Shui kexue jinzhan, 2012 Based on the surface morphology of sea ice in the Weddell Sea measured by a helicopter-borne laser altimeter during the Winter Weddell Outflow Study 2006,form drag on ice ridges and its contribution to total drag,and air-ice drag coefficient Cdn(10 ...
TAN Bing +4 more
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Free Surface Effects on the Hydrodynamic Characteristics of NACA0012
水下无人系统学报, 2023 When a transmedia vehicle moves across water and air media, the free surface has a great influence on its airfoil, which brings challenges to the overall design and navigation control.
Zhao LIU +4 more
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International Journal of Technology, 2020 A new device for air lubrication called the Winged Air Induction Pipe (WAIP) is studied in the present work. The device, which consists of an angled hydrofoil, uses the low-pressure region produced above the hydrofoil as a ship moves forward.
Yanuar +4 more
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High-Fidelity Drone Simulation with Depth Camera Noise and Improved Air Drag Force Models
Applied Sciences, 2023 Drone simulations offer a safe environment for collecting data and testing algorithms. However, the depth camera sensor in the simulation provides exact depth values without error, which can result in variations in algorithm behavior, especially in the ...
Woosung Kim +5 more
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