Results 21 to 30 of about 587 (163)

Power Modeling and Experiment Study of Large Flapping-Wing Flying Robot during Forward Flight

open access: yesApplied Sciences, 2022
A power estimation approach for calculating the power of a flapping-wing air vehicle (FWAV) in forward flight is proposed in this paper. One of the challenges and essential points of FWAVs is endurance.
Siping Zhong, Wenfu Xu
doaj   +1 more source

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

On flapping flight [PDF]

open access: yesProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1909
Abstract This paper is supplementary to one by the same author published in the 'Proceedings of the Royal Society' in 1899, "On Flapping Flight of Aeroplanes," communicated by the late Prof. George F. FitzGerald, F. R. S. Towards the end of that paper, the author refers to the subject of hovering, and points out that the method of his
openaire   +1 more source

A Review of Flapping Mechanisms for Avian-Inspired Flapping-Wing Air Vehicles

open access: yesAerospace, 2023
This study focuses on the flapping mechanisms found in recently developed biometric flapping-wing air vehicles (FWAVs). FWAVs mimic the flight characteristics of flying animals, providing advantages such as maneuverability, inconspicuousness, and ...
Jae-Hung Han   +4 more
doaj   +1 more source

Design of Variable Amplitude Flapping Wing Aircraft and Realization of Multiple Flight Modes

open access: yesJixie chuandong, 2021
Aiming at the problems of the single flight mode and inflexible flight attitude,a variable amplitude flapping wing aircraft is designed. By adjusting the flapping amplitude, the flapping wing motion attitude and flight mode can be switched.
Yueyang Hou   +4 more
doaj  

Modeling and Simulation Analysis of Bionic Flapping-Wing Flight Attitude Control Based on L1 Adaptive

open access: yesComplexity, 2023
Flapping-wing flight control is a multi-input and multi-output nonlinear system with uncertainties, which is affected by modeling errors, parameter variations, external disturbances, and unmodeled dynamics. Parameter uncertainty has a great impact on the
Lun Li   +4 more
doaj   +1 more source

Analysis on Hover Control Performance of T- and Cross-Shaped Tail Fin of X-Wing Single-Bar Biplane Flapping Wing

open access: yesJournal 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
doaj   +1 more source

Efficiency of lift production in flapping and gliding flight of swifts.

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   +1 more source

Mechanism and Kinematics for Flapping Wing Micro Air Vehicles Maneuvering Based on Bilateral Wings

open access: yesInternational Journal of Aerospace Engineering, 2022
With the development and application of a bionic flapping micro aircraft vehicle (FMAV), further requirements for its high maneuvering flight characteristics have been put forward. A controlling tail cannot meet the requirements of the maneuvering flight
Rui Zhang   +5 more
doaj   +1 more source

Research progress on the energy consumption of bionic flapping-wing aerial vehicles

open access: yes工程科学学报, 2022
Natural flyers use muscles, bones, and other structures in coordination to attain agile and nimble flight performance. They can fly in various complex environments through different flight modes, such as flapping, hovering, and gliding.
Min ZHAO   +4 more
doaj   +1 more source

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