نتایج جستجو برای: vehicle aerodynamics

تعداد نتایج: 116814  

2011
Jean-Marc Moschetta Edouard Belin

The present project is the sequel of a transatlantic collaborative research project started in 2007 with the University of Arizona and the group of Dr. Sergey Shkarayev. The previous research grant was devoted to the comparative study of tilt-rotor and tilt-body configurations for Micro Aerial Vehicles (MAV). The purpose of the present study is to investigate the potential benefit of combining ...

Journal: :Nature 1958

2017
MARCUS LEE

Submitted for the DFD17 Meeting of The American Physical Society Wake instabilities of flow over a spinning circular disk at angle of attack1 MARCUS LEE, TIM COLONIUS, BEVERLEY MCKEON, Caltech — A circular disk spinning about its axis of rotational symmetry is inherently robust to external disturbances due to gyroscopic moments and is therefore a promising configuration for a robust micro air v...

2004
T. E. Nelson

This paper presents a review of developments in aerodynamics during the last 50 years. Progress in aerodynamic design, theoretical aerodynamics, wind tunnel testing, and especially computational fluid dynamics (CFD) is discussed. Where appropriate, applications to aircraft design are presented, as are new aircraft concepts. Topics of Canadian interest are presented and the paper includes severa...

2008
Jian Tang Satish Chimakurthi Rafael Palacios Carlos E.S. Cesnik Wei Shyy

Motivated by micro air vehicle applications, a fluid-structure coupling procedure between a NavierStokes solver and a three-dimensional FEM beam solver is presented along with selected results highlighting some of the aerodynamics implications. The fluid model includes laminar, the k ε − turbulence closure, and a filter-based k ε − closure. The structural model is based on an asymptotic approxi...

Journal: :Iet Control Theory and Applications 2023

The control of unmanned aerial vehicle quadrotor is challenging because non-linearities, coupling and disturbance. Here, a novel method which includes reinforcement learning (RL) component robust proposed. In this method, the RL only relies on collected data instead modelling to handle disturbance from aerodynamics model. To ensure safety during training improve speed, used reduce .The stabilit...

2009
Shuhai Zhang Shufen Jiang Yong-Tao Zhang Chi-Wang Shu

wave and two counter-rotating vortices Shuhai Zhang, Shufen Jiang, Yong-Tao Zhang, and Chi-Wang Shu State Key Laboratory of Aerodynamics, China Aerodynamics Research and Development Center, Mianyang, Sichuan 621000, China China Aerodynamics Research and Development Center, Mianyang, Sichuan 621000, China Department of Mathematics, University of Notre Dame, Notre Dame, Indiana 46556, USA Divisio...

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