Results 71 to 80 of about 522,105 (314)

The Development of a PiezoelectricI Fan System for the Flapping Wing Micro-Air-Vehicle Application [PDF]

, 2008
A micro air vehicle (MAV) is a semiautonomous airborne vehicle which measures less than 15 cm in any dimension. It can be used to access situations too dangerous for direct human intervention, e.g., explosive devices planted in buildings and video ...
Chung, Hsien-Chun
core  

Influence of wing kinematics on aerodynamic performance in hovering insect flight

, 2007
The influence of different wing kinematic models on the aerodynamic performance of a hovering insect is investigated by means of two-dimensional time-dependent Navier–Stokes simulations.
Bijl, H., Oudheusden, B.W., van, Van Oudheusden, B.W., Bos, F.M. (author), Lentink, D. (author), Van Oudheusden, B.W. (author), Bijl, H. (author), Bos, F.M., Lentink, D.   +8 more
core   +1 more source

In‐Process Magnetization for 3D Printing of Magnetorheological Elastomer with Heterogeneous Magnetic Profile for Anisotropic Actuation

Advanced Science, EarlyView.
Fully programmable, in‐process 3D magnetization integrated with multi‐material printing enables soft magnetic systems with precise actuation and sensing. Discrete and continuous magnetization profiles drive bending, morphing, and locomotion, demonstrated through strain‐sensing elements, dragonfly‐inspired wings, octopus‐like tentacles, and a serpentine
Phillip Glass, David Hassouna, Udena Epitawala Arachchige, Hyeon Yun Jeong, Sung Hyun Park, Daeha Joung   +5 more
wiley   +1 more source

Investigation into the hovering flight dynamics and control of a flapping wing micro air vehicle [PDF]

, 2003
The hovering flight of a micro air vehicle was investigated. Various flight control concepts, inspired by observation of insect and bird flight, were investigated in some detail. The concepts make use of flap frequency or phase between the flap and pitch
Loh, K.
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Flapping wing drones show off their skills

Science Robotics, 2020
The identification and solution of a major efficiency loss in small flapping wing drones lead to more agile aerobatic maneuvers. The identification and solution of a major efficiency loss in small flapping wing drones lead to more agile aerobatic ...
G. D. de Croon
semanticscholar   +1 more source

Design and Experimental Study of a Flapping–Twist Coupled Biomimetic Flapping-Wing Mechanism

Drones
Medium and large-sized birds exhibit remarkable agility and maneuverability in flight, with their flapping motion encompassing degrees of freedom in flapping, twist, and swing, which enables them to adapt effectively to harsh ecological environments ...
Rui Meng, Bifeng Song, Jianlin Xuan, Yugang Zhang   +3 more
doaj   +1 more source

Numerical study on the aerodynamic performance of the three-dimensional wing of a jellyfish-like flyer

Frontiers in Physics, 2023
The jellyfish-like flying machine is a new development direction of the future bionic flapping-wing aircraft besides the insect-mimic and bird-mimic micro air vehicles (MAVs).
Xueguang Meng, Chengjian Deng, Dingsheng Wang, Shujie Jiang   +3 more
doaj   +1 more source

Unsteady aerodynamic forces of a flapping wing [PDF]

Journal of Experimental Biology, 2004
SUMMARYThe unsteady aerodynamic forces of a model fruit fly wing in flapping motion were investigated by numerically solving the Navier–Stokes equations. The flapping motion consisted of translation and rotation [the translation velocity (ut) varied according to the simple harmonic function (SHF), and the rotation was confined to a short period around ...
Jiang Hao, Wu, Mao, Sun
openaire   +2 more sources

A Versatile‐Designable Framework for Active and Programmable Shape‐Morphing Soft Matter Systems: From Inverse Design to Closed‐Loop Control

Advanced Science, EarlyView.
A versatile framework integrates addressable electrothermal actuation and strain‐constraint mechanisms to construct programmable shape‐morphing soft matter systems. By combining an analytical inverse design strategy for high‐fidelity 3D surface reconstruction with deep learning‐based closed‐loop control, this approach enables zero‐energy shape locking,
Kai Liu, Peiling Xie, Ruitong Song, Banghan Liu, Rui Guo, Jiu‐an Lv   +5 more
wiley   +1 more source

An indicial-polhamus model of aerodynamics of insect-like flapping wings in hover [PDF]

, 2011
As part of the ongoing development of Flapping-Wing Micro Air Vehicle (FMAV) prototypes at RMCS Shrivenham,a model of insect-like wing aerodynamics in hover has been developed, and implemented as MATLAB code.The model is intended to give better insight ...
Pedersen, C B
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