Results 11 to 20 of about 885,530 (308)
Experimental studies of the aerodynamics of spinning and stationary footballs [PDF]
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2008 The accurate discrimination of the aerodynamic parameters affecting the flight of sports balls is essential in the product development process. Aerodynamic studies reported to date have been limited, primarily because of the inherent difficulty of making accurate measurements on a moving or spinning ball.
Martin Passmore +3 more
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The lateral force on a spinning sphere: Aerodynamics of a curveball [PDF]
American Journal of Physics, 1987 The lateral force on a spinning baseball in a wind tunnel has been measured. The magnitude of the force is nearly independent of the orientation of the seams of the ball. The drag coefficient appears to be at most weakly dependent on Reynolds number and to be principally a function of the ratio of the rotational speed of the equator of the ball to the ...
Robert G. Watts, Ricard Ferrer
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Fundamental Aerodynamics of Non-spinning Soccer Ball
Korean Journal of Sport Science, 2010 홍성찬, 아사히 타케시
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Ball Motion Control in the Table Tennis Robot System Using Time-Series Deep Reinforcement Learning
IEEE Access, 2021 One of the biggest challenges hindering a table tennis robot to play as well as a professional player is the ball’s accurate motion control, which depends on various factors such as the incoming ball’s position, linear, spin velocity and so
Luo Yang +3 more
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Investigation of the Aerodynamic Drag of Baseballs with Gyro Spin [PDF]
The 13th Conference of the International Sports Engineering Association, 2020 The following considers drag measurements of baseballs with backspin (spin axis horizontal and normal to trajectory) and gyro spin (spin axis parallel to trajectory) orientations. Balls were propelled through still air in a laboratory setting at 36 m/s and spin ranging from 1250 rpm to 1750 rpm.
Jeff Kensrud, Lloyd V. Smith, Bin Lyu
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Flying spin qualities testing of airplane [PDF]
Tehnika, 2015 In this paper is presented the theoretical analysis of origins and characteristics of spinning motion. There are precise explanation of every stage spin flight and basic meaning of notion.
Kostić Čedomir J. +2 more
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The effect of aerodynamics on table tennis
Theoretical and Natural Science, 2023 In the table tennis sport category, the different spin formula of table tennis ball will show different motion state, in which the important physical knowledge that is permeated aerodynamics.
Qinghua Yang
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Aerodynamics in the beautiful game
Physics today, 2022 We consider the aerodynamics of football, specifically, the interaction between a ball in flight and the ambient air. Doing so allows one to account for the characteristic range and trajectories of balls in flight, as well as their anomalous deflections ...
J. M. Bush
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Bifurcation Flight Dynamic Analysis of a Strake-Wing Micro Aerial Vehicle
Applied Sciences, 2021 Non-linear phenomena are particularly important in -flight dynamics of micro-class unmanned aerial vehicles. Susceptibility to atmospheric turbulence and high manoeuvrability of such aircraft under critical flight conditions cover non-linear aerodynamics
Mirosław Nowakowski +3 more
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Aerodynamic Analysis of a Spinning Missile with Dithering Canards [PDF]
Journal of Spacecraft and Rockets, 2002 A generic spinning missile with dithering canards is used to demonstrate the utility of an overset structured grid approach for simulating the aerodynamics of rolling airframe missile systems. The approach is used to generate a modest aerodynamic database for the generic missile.
Tor A. Nygaard, Robert L. Meakin
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