Results 21 to 30 of about 12,055 (162)
International Journal of Naval Architecture and Ocean Engineering, 2019 In recent years, nonlinear dynamic models have been developed for flapping-type energy harvesting systems with a rigid wing, but not for those with a flexible wing.
Patar Ebenezer Sitorus +2 more
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Biomimetics, 2022 Observability analysis of a bioinspired flexible flapping wing system provides a measure of how well the states of flexible flapping wing micro-aerial vehicles can be estimated from real-time measurements during high-speed flight.
Bingyu Jin +4 more
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Journal of Biomechanical Science and Engineering, 2018 Insect wings change its shape passively by the aerodynamic and inertial forces when flapping, which can greatly affect its aerodynamic performances. In order to confirm the importance of the fluid-structure interaction in flapping wing aerodynamics, we ...
Toshiyuki NAKATA, Ryusuke NODA, Hao LIU
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Flapping‐Wing Dynamics as a Natural Detector of Wind Direction
Advanced Intelligent Systems, 2021 Flapping‐wing unmanned aerial vehicles have potential advantages, such as consuming lower energy by leveraging the force of wind. Since the flapping movements of the soft wings contain information about the wind, measuring the movement of each part of ...
Kazutoshi Tanaka +8 more
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Wing Flexibility Effects in Clap-and-Fling
International Journal of Micro Air Vehicles, 2011 The work explores the use of time-resolved tomographic PIV measurements to study a flapping-wing model, the related vortex generation mechanisms and the effect of wing flexibility on the clap-and-fling movement in particular. An experimental setup is designed and realized in a water tank by use of a single wing model and a mirror plate to simulate the
Percin, M. (author) +4 more
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Effects of Flexibility on the Aerodynamic Performance of Flapping Wings [PDF]
6th AIAA Theoretical Fluid Mechanics Conference, 2011 AbstractEffects of chordwise, spanwise, and isotropic flexibility on the force generation and propulsive efficiency of flapping wings are elucidated. For a moving body immersed in viscous fluid, different types of forces, as a function of the Reynolds number, reduced frequency (k), and Strouhal number (St), acting on the moving body are identified ...
Kang, C.K. +3 more
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A non-linear unsteady flexible wing theory [PDF]
Structural Control and Health Monitoring, 2006 This paper extends a previous study by Wu (Adv. Appl. Mech. 2001; 38:291-353) to continue developing a fully non-linear theory for calculation of unsteady flow generated by a two-dimensional flexible lifting surface moving in arbitrary manner through an incompressible and inviscid fluid for modelling bird/insect flight and fish swimming.
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Oscillating Flexible Wings at Low Reynolds Numbers [PDF]
51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, 2013 In nature a range of techniques are used to overcome the challenges of low Reynolds number flight. In this paper two of these are considered, wing oscillations and wing flexibility. The force, deformation and flow fields of rigid and flexible wings oscillating at a fixed post-stall angle of attack of 15° and amplitude of 15% of chord are measured.
Cleaver, David +2 more
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Experimental investigation on aerodynamic characteristics of flexible wing MAV under horizontal gust
AIP AdvancesA flexible wing micro air vehicle and a rigid wing micro air vehicle, both with flying wing designs, were designed and developed, and the aerodynamic characteristics of the flexible micro air vehicle and the rigid micro air vehicle under steady wind and ...
Zhiqiang Liu +3 more
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The effect of passive deformation of dragonfly wing on aerodynamic characteristics
Nihon Kikai Gakkai ronbunshu, 2016 Dragonflies can perform both of gliding and flapping flight and have high maneuverability in spite of small-size. The aim of this study is to develop Micro Air Vehicle (MAV) based on the flight of dragonfly.
Hisayoshi NAKA, Hiromu HASHIMOTO
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