Results 221 to 230 of about 4,991 (249)

Incorporation of Passive Wing Folding in Flapping Wing Miniature Air Vehicles

Volume 7: 33rd Mechanisms and Robotics Conference, Parts A and B, 2009
Flapping wing motion produces positive lift in the down stroke and negative lift in the upstroke under zero forward velocity. Large birds frequently exhibit flight behavior where their wings are folded during the upstroke, thus lowering the air resistance as the wing is moved upwards. The result is reduced magnitude of negative lift produced during the
Dominik Mueller, John W. Gerdes, Satyandra K. Gupta   +2 more
openaire   +1 more source

Investigation of dynamic characteristic of forward swept folding wing

2011 IEEE International Conference on Automation and Logistics (ICAL), 2011
In order to investigate the dynamic characteristic of the aircraft with forward swept folding wing, the finite element model of the forward swept folding wing was modeled in the commercial finite element analysis software MSC Patran, and the corresponding modal analysis was performed using the SOL 103 solution sequence in the MSC Nastran.
Kun Jiang, Wei Zhang 0095, XiaoWu Xu, Zhi Ma 0004   +3 more
openaire   +1 more source

Continuum Aeroelastic Model for a Folding-Wing Configuration

AIAA Journal, 2009
An aeroelastic model and analytical solution methodology are developed to find the flutter solutions for the continuous representation of a two-segment uniform folding wing. The model is developed such that different parameters can be easily modified to examine changes in the flutter solutions.
Sebastian Liska, Earl H. Dowell
openaire   +1 more source

Strange Wing Folding in a Rove Beetle

2019
This chapter focuses on the strange wing folding in rove beetles and shows its interesting properties from the point of view of engineering applications. Compared with other typical beetles, the elytra of most rove beetles are reduced, and the projecting abdomen is exposed and freely movable.
openaire   +1 more source

Design of an active wing-folding biomimetic flapping-wing air vehicle

Engineering Research Express
Abstract In nature, birds and bats dynamically alter their wing shapes to suit various flight environments and tasks. This paper focuses on the design and validation of a biomimetic flapping-wing aerial vehicle, named FlexiWing, which features a unique mechanism for active wing deformation.
Yongqiang Zhu, Longhua Zou, Huyue Zhuang, Hao Liu, Pingxia Zhang, Guangyao Zhou   +5 more
openaire   +1 more source

Folded wings

2022
openaire   +1 more source

Correction method of airfoil thickness effect in hinge moment calculation of a folding wing

Chinese Journal of Aeronautics, 2020
Jinglong Han, Hao Xu
exaly  

Aeroelastic study for folding wing during the morphing process

Journal of Sound and Vibration, 2016
Zhichun Yang
exaly  

Deployment Modes and Aerodynamic Analysis of UAV Orthogonal Biaxial Folding Wing

Aerospace, 2023
exaly  

The nonlinear aeroelastic characteristics of a folding wing with cubic stiffness

Journal of Sound and Vibration, 2017
Zhichun Yang, Xiaochen Wang
exaly