Results 21 to 30 of about 460 (265)

Aerodynamics of a Spinning Table Tennis Ball ~Lift Crisis~

The Proceedings of Mechanical Engineering Congress, Japan, 2016
Wataru Sakai, Takeshi Miyazaki, Tatsuro Komatsu, Naoya Takahashi, Ryutaro Himeno   +4 more
openalex   +3 more sources

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, Haibo Zhang, Xiangyang Zhu, Xinjun Sheng   +3 more
doaj   +1 more source

Spin Rate Measurements in Cricket Bowling Using Magnetometers

Proceedings, 2020
The ability to measure and classify spin has been of great interest to cricket organizations, coaches, and athletes. While video is common, an alternative approach is to use 3D motion capture analysis with reflective spheres, which changes the ...
Aswath Kumar, Hugo G. Espinosa, Matthew Worsey, David V. Thiel   +3 more
doaj   +1 more source

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., Rašuo Boško P., Janković Aleksandar M.   +2 more
doaj   +1 more source

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, Krzysztof Sibilski, Anna Sibilska-Mroziewicz, Andrzej Żyluk   +3 more
doaj   +1 more source

Analysis of stability derivatives important to recovery from spin

Aviation, 2016
This paper describes the numerical analysis of light aircraft stability derivatives in a wide range of angles of attack, important for recovery from spin.
Marcin Figat, Zdobysław Goraj
doaj   +1 more source

The Analysis of Shuttlecock Velocity Based on the Field Test Method of The Home Industry Products in Indonesia

Jurnal Pendidikan Jasmani dan Olahraga, 2020
One of the main components of badminton games is shuttlecock. The shuttlecock home industries in Indonesia mainly employ for about 20-40 freelance workers. The workers in the home industries are able to produce 500-100 slops of shuttlecock daily.
Ucup Yusup, Agus Rusdiana
doaj   +1 more source

Identification of roll damping coefficient using the free rotation method [PDF]

INCAS Bulletin
The free rotation method represents the simplest method for roll damping coefficient identification in experimental aerodynamics. To apply this method, it is necessary to spin the model to a desired angular velocity and then release the model to spin ...
Ionut BUNESCU, Mihai-Victor PRICOP, Mihaita-Gilbert STOICAN, Mihai-Vladut HOTHAZIE   +3 more
doaj   +1 more source

Experimental Validation of Elliptical Fin-Opening Behavior

Shock and Vibration, 2003
An effort to improve the performance of ordnance has led to the consideration of the use of folding elliptical fins for projectile stabilization. A second order differential equation was used to model elliptical fin deployment history and accounts for ...
James M. Garner, Paul Weinacht, Robert P. Kaste   +2 more
doaj   +1 more source

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 Nygaard, Robert Meakin
openaire   +1 more source