Results 61 to 70 of about 455,243 (146)

Incorporation of Passive Wing Folding in Flapping Wing Miniature Air Vehicles

, 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 ...
Satyandra K. Gupta, John W. Gerdes, Dominik Mueller   +2 more
core   +1 more source

Research on Locking Velocity Constraints and Influencing Factors of Folding Wings Based on Locking Mechanisms

Applied Sciences
The rapid deployment of folding wings is characterized by high-energy impacts, which require an immediate and effective response from the locking mechanism.
Guangqing Zhai, Hong Xiao, Wenlong Li, Runchao Zhao, Xiaowei Ma, Hao Zou, Jiefu Chen   +6 more
doaj   +1 more source

Design of a Folding-Wing Submersible Aircraft

, 2016
A submersible aircraft has a large variety of envisioned applications: environmental research, search-and-rescue, surveillance, military defense, etc.
Qin, Allen
core  

Quantitative analysis of the morphing wing mechanism of raptors: Analysis methods, folding motions, and bionic design of Falco Peregrinus

Fundamental Research
Raptors can change the shape and area of their wings to an exceptional degree in a fast and efficient manner, surpassing other birds, insects, or bats.
Di Tang, Xipeng Huang, Jinqi Che, Weijie Jin, Yahui Cui, Yangjun Chen, Yuxiao Yuan, Zhongyong Fan, Weiwei Lu, Siyu Wang, Yin Yang, Dawei Liu   +11 more
doaj   +1 more source

Mikó I, Copeland RS, Balhoff JP, Yoder MJ, Deans AR (in press) Folding wings like a cockroach: a review of transverse wing folding ensign wasps (Hymenoptera: Evaniidae: Afrevania and Trissevania). PLOSONE.

, 2014
Images of this fileset will be published in Mikó, István, Robert S. Copeland, James P. Balhoff, Matthew Yoder & Andrew R. Deans (in press). Folding wings like a cockroach: a review of transverse wing folding ensign wasps (Hymenoptera: Evaniidae ...
Istvan Miko (99068)
core   +1 more source

Multi-Level Switching Control Scheme for Folding Wing VTOL UAV Based on Dynamic Allocation

Drones
A folding wing vertical take-off and landing (VTOL) UAV is capable of transitioning between quadrotor and fixed-wing modes, but significant alterations occur in its dynamics model and maneuvering mode during the transformation process, thereby imposing ...
Zehuai Lin, Binbin Yan, Tong Zhang, Shaoyi Li, Zhongjie Meng, Shuangxi Liu   +5 more
doaj   +1 more source

Surrogate Modeling of Non-Linear Folding Wing Tip Aerodynamic Coefficients

Engineering Proceedings
The development of sustainable and efficient aircraft concepts, such as those featuring flared folding wing tips (FWTs), introduces both aerodynamic and structural challenges.
Andreas Molz, Christian Breitsamter
doaj   +1 more source

Notes: Interview with Henry Wing, June 7, 1924

, 1924
Interview with Henry Wing, 4 ...
Tarbell, Ida M.
core  

Design of Multi-Wing Deployment Mechanism Based on Multiple Performance Indicators and Topology: Theoretical and Experimental Study

Applied Sciences
The folding wing deployment mechanisms of aircraft are constrained by weight and space limitations, necessitating fewer actuators, multiple outputs, compact designs, and high efficiency. However, existing folding wing mechanisms often overlook the impact
Guangqing Zhai, Jianguo Tao, Hong Xiao, Hongwei Guo, Guang Yang, Runchao Zhao, Chen Yao, Rongqiang Liu   +7 more
doaj   +1 more source

Multi-body dynamics modeling and transient characteristics analysis for a folding wing

, 2021
The investigation of modeling the time evolution of a folding wing during the morphing process and the dynamic characteristics analysis is carried out. The governing equations with uniform form are developed from the integration of floating frame method ...
Ni, Yingge, Zhang, Wei, Lv, Yi
core