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Wind turbine condition monitoring dataset of Fraunhofer LBF. [PDF]
Sci DataMostafavi A, Friedmann A.
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Aerodynamics of spinning and non-spinning tennis balls
Journal of Wind Engineering and Industrial Aerodynamics, 2004The aerodynamic properties of a tennis ball are obtained using wind tunnel measurements. In the first phase of this study, the drag coefficient of a variety of new and used non-spinning tennis balls was measured. The measurements were conducted in the Reynolds number range of 85×103 In the second phase of this study, the drag and lift coefficients ...
S.R. Goodwill, S.B. Chin, S.J. Haake
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Aerodynamics and Design of Spinning Samara Model
2021A particular form of winged seed (samara) dispersal technique adopted by nature uses autorotative (unpowered rotation of the wing generating thrust force against gravity) descent; for e.g. in Maple and Mahagony trees. This technique provides the lowest descent velocities among various seed dispersal techniques found in nature ensuring the safety of the
G. Yogeshwaran +2 more
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Aerodynamic and flight dynamic interaction in spin
Aircraft Engineering and Aerospace Technology, 2019PurposeThe purpose of this paper is to describe an integrated approach to spin analysis based on 6-DOF (degrees of freedom) fully nonlinear equations of motion and a three-dimensional multigrid Euler method used to specify a flow model. Another purpose of this study is to investigate military trainer performance during a developed phase of a ...
Ewa Marcinkiewicz +2 more
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Aerodynamics of a Spinning Sphere
The Journal of the Royal Aeronautical Society, 1928The full equations of motion for the flow of a viscous fluid have proved too complicated for any general solution to be obtained. It is to be doubted if, in. the near future, the problem of fluid motion will be solved in a general manner, although solutions for a few special cases may be found.
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Aerodynamic Coefficients of a Microspoiler for Spin-Stabilized Projectiles
Journal of Spacecraft and Rockets, 2023In this paper, the aerodynamic coefficients of a microspoiler for a spin-stabilized projectile are studied using a computational fluid dynamics (CFD) simulation. To guarantee an effective study, the CFD simulation methodology is validated by the current literature and a wind-tunnel test.
Sijiang Chang, Dongyang Li
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Subsonic Aerodynamics of Spinning and Non-Spinning Type 200 Lightcraft: Progress Report
AIP Conference Proceedings, 2010A combined experimental and numerical investigation of subsonic aerodynamics for Type 200 laser lightcraft is underway for both spinning and non‐spinning cases. A 12.2 cm diameter aluminum model with a “closed” annular airbreathing inlet was fitted to a sting balance in RPI’s 61 cm by 61 cm subsonic wind tunnel.
David A. Kenoyer +4 more
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Complex Aerodynamics Behavior of High Spin APFSDS Projectile
Journal of Applied Mechanics, 2013The supersonic aerodynamics of a high spin armor-piercing fin-stabilized discarding sabot projectile (APFSDS) is numerically and experimentally investigated. Classically, using a 120 mm smooth bore gun, the value of the nondimensional steady spin rate of the inflight APFSDS projectile is about 0.01.
Roxan Cayzac +2 more
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Aerodynamic Data for Spinning Projectiles
1952Abstract : This is a collection of the physical and aerodynamic data of spinning projectiles (excluding spin-stabilized rockets) which have been obtained experimentally in the U.S. during the past decade. Some theoretical and empirical formulas are included. The index classifies the projectiles according to their shape.
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