Results 1 to 10 of about 400 (232)
Investigating the Knuckleball Effect in Soccer Using a Smart Ball and Training Machine [PDF]
Sensors, 2022 The term knuckleball in sporting jargon is used to describe a ball that has been launched with minimal spin, resulting in a trajectory that is erratic and unpredictable.
David Eager +3 more
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Nonlinear Model and Ballistic Impact of Body Aerodynamics for Canard Dual-Spin Aircraft
AerospaceTargeting the nonlinear issues of the canard dual-spin aircraft, which relies on the high-speed rotation of the afterbody for flight stability and achieves trajectory correction by adjusting the roll angle of the low-speed rotating forebody to alter ...
Xinxin Zhao +3 more
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Spiraling light: from donut modes to a Magnus effect analogy [PDF]
Nanophotonics, 2021 The insight that optical vortex beams carry orbital angular momentum (OAM), which emerged in Leiden about 30 years ago, has since led to an ever expanding range of applications and follow-up studies. This paper starts with a short personal account of how
Spreeuw Robert J. C.
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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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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 +3 more
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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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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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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
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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
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Identification of roll damping coefficient using the free rotation method [PDF]
INCAS BulletinThe 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 +3 more
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