Results 1 to 10 of about 23,871 (181)

Efficiency of lift production in flapping and gliding flight of swifts. [PDF]

open access: yesPLoS ONE, 2014
Many flying animals use both flapping and gliding flight as part of their routine behaviour. These two kinematic patterns impose conflicting requirements on wing design for aerodynamic efficiency and, in the absence of extreme morphing, wings cannot be ...
Per Henningsson   +2 more
doaj   +4 more sources

Design and Flight Experiment of a Motor-Directly-Driven Flapping-Wing Micro Air Vehicle with Extension Springs [PDF]

open access: yesBiomimetics
This study presents the design, control, and flight experiments of a motor-directly-driven flapping-wing micro air vehicle with extension springs (MDD-FWMAVES).
Seungik Choi   +3 more
doaj   +2 more sources

Development of flapping wing robot and vision-based obstacle avoidance strategy [PDF]

open access: yesPeerJ Computer Science, 2023
Due to the flight characteristics such as small size, low noise, and high efficiency, studies on flapping wing robots are being actively conducted. In particular, the flapping wing robot is in the spotlight in the field of search and reconnaissance. Most
Heetae Park   +4 more
doaj   +2 more sources

Research progress on the flight control of flapping-wing aerial vehicles

open access: yes工程科学学报, 2023
In nature, flying creatures flap their wings to generate lift, which is necessary for flight. Most birds change flight patterns by moving their wings using their wing muscles and adjusting their tail states.
Tingting WANG   +4 more
doaj   +1 more source

Aerodynamic Analysis and Design Optimization of a Novel Flapping Wing Micro Air Vehicle in Hovering Flight [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2023
Inspired by the challenging and nimble flight dynamics of flying insects and birds, this research investigates bionic propulsion technology to develop an improved flapping wing micro air vehicle (FWMAV) design.
Y. Zhang, Z. Wang, H. Zheng
doaj   +1 more source

Behavioral control and changes in brain activity of honeybee during flapping

open access: yesBrain and Behavior, 2021
Introduction Insect cyborg is a kind of novel robot based on insect–machine interface and principles of neurobiology. The key idea is to stimulate live insects by specific stimuli; thus, the flight trajectory of insects could be controlled as anticipated.
Haojia Ding, Jieliang Zhao, Shaoze Yan
doaj   +1 more source

First lift-off and flight performance of a tailless flapping-wing aerial robot in high-altitude environments

open access: yesScientific Reports, 2023
Flapping flight of animals has captured the interest of researchers due to their impressive flight capabilities across diverse environments including mountains, oceans, forests, and urban areas.
Shu Tsuchiya   +8 more
doaj   +1 more source

Flying State Sensing and Estimation Method of Large-Scale Bionic Flapping Wing Flying Robot

open access: yesActuators, 2022
A large bionic flapping wing robot has unique advantages in flight efficiency. However, the fluctuation of fuselage centroid during flight makes it difficult for traditional state sensing and estimation methods to provide stable and accurate data.
Guangze Liu, Song Wang, Wenfu Xu
doaj   +1 more source

Animalopters - towards a new dimension of flight mechanics [PDF]

open access: yesTransport, 2002
Recently, it has been recognised that flapping wing propulsion can be more efficient than conventional propel­lers if applied to very small-scale vehicles, so-called MAVs (micro air vehicles).
J. A. Goszczynski   +3 more
doaj   +3 more sources

Calculation Methods of Flight Performance of Flapping Wing Aircrafts Based on Energy Theory and Slipstream Theory (September 2018)

open access: yesIEEE Access, 2018
Flight performance calculation is an important part of the micro flapping wing air vehicle design. It is used to verify whether the air vehicle design meets the performance requirements so as to make targeted improvements to the design.
Jianlin Xuan, Z. Yang, P. Nian, D. Ma
doaj   +1 more source

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