Results 91 to 100 of about 522,105 (314)
Aerospace, 2018 Beetles have attracted attention from researchers due to their unique combination of a passively flapping forewing and an actively flapping hindwing during flight.
Hidetoshi Takahashi +3 more
doaj +1 more source
Flight of the dragons: a global review of migration in Odonata
Biological Reviews, EarlyView.ABSTRACT Insects are the most abundant and ecologically important animal migrants. Yet, we know relatively little about the patterns and processes underlying insect migration. Dragonflies (Anisoptera) and damselflies (Zygoptera) comprise the ancient insect order Odonata, whose ancestors were the first organisms to fly on Earth.
Johanna S.U. Hedlund +3 more
wiley +1 more source
Journal of Robotics, 2020 The current flapping wing adopts T-shaped or cross-shaped tail fin to adjust its flight posture. However, how the tail fin will affect the hover control is not very clear.
Pingxia Zhang, Junru Zhu, Yongqiang Zhu
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The Curriculum Journal, EarlyView.Abstract Curriculum reform provides a vital opportunity for nations to ensure learners are equipped to fully participate as citizens in the 21st century. This paper presents an understanding of educators’ response to curriculum reform, and some of its enablers and barriers.
Alison Glover +5 more
wiley +1 more source
A Wind Tunnel Experimental Study on the Flexible Flapping Wing With an Attached Airfoil to the Root
IEEE Access, 2019 With the purpose to improve the performance of the flexible membrane flapping wing, a kind of flapping wing with an attached airfoil to the root is designed and tested in a wind tunnel.
Peng Nian +4 more
doaj +1 more source
International Journal for Numerical Methods in Fluids, EarlyView.A three‐dimensional fluid‐structure interaction (FSI) framework is developed using the geometric volume‐of‐fluid (VOF) interface capturing method and applied to assess largescale turbulent FSI interactions. The monolithic FSI framework is extensively validated, and despite the discontinuities across the interface, the FSI framework delivers stable and ...
Soham Prajapati +2 more
wiley +1 more source
Unsteady Flow past a Flapping Aerofoil [PDF]
, 2012 : Unsteady flow computations are presented for low speed Mach number flow past a combined pitching and plunging aerofoil. The Implicit Reynolds-averaged Navier-Stokes solver used for obtaining time-accurate solutions is based on finite volume nodal ...
Siva Kumar, K, Sharanappa, Sajjan V
core
, 2010 Birds, bats, and insects flap their wings to produce lift as well as thrust. The aerodynamics associated with flapping wings can be enhanced by large-scale vortical flow structures by wing kinematics, wing shapes, and flexible wing structures ...
Liu, Hao +5 more
core +1 more source
Flapping‐Wing Dynamics as a Natural Detector of Wind Direction
Advanced Intelligent Systems, 2020 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
semanticscholar +1 more source
Design of Flapping Wing Aircraft based on Crank Chute Mechanism
Jixie chuandong, 2022 Aiming at the problem of phase lag in flapping wing of traditional flapping wing aircraft，a kind of flapping wing aircraft driven by crank chute mechanism is designed，its modeling and simulation analysis are carried out，the prototype is made and the ...
Qi Li, Yu Cai, Xiansheng Huang, Bin Liu
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