Results 11 to 20 of about 450,371 (196)

Dynamic analysis of wing deployment of high altitude balloon launched small size folding-wing UAV1

open access: yesMATEC Web of Conferences, 2018
The batch launch of small folding-wing UAVs by high altitude balloon at high altitude is a new technology in recent years. The wing deployment process at 20km altitude is analyzed, and mathematical model of the wing delivery is established.
Zhang Hangyue, Yang Yanchu
doaj   +3 more sources

Calculation of the Hinge Moments of a Folding Wing Aircraft during the Flight-Folding Process

open access: yesInternational Journal of Aerospace Engineering, 2019
A folding wing morphing aircraft should complete the folding and unfolding process of its wings while in flight. Calculating the hinge moments during the morphing process is a critical aspect of a folding wing design.
Hao Xu   +3 more
doaj   +2 more sources

Aeroelasticity study of high span ratio wing with flare folding wingtip

open access: yesXibei Gongye Daxue Xuebao
Flare folding wing-tips rely on the adaptive deformation of the structure to reduce the flight load, which can effectively simplify the control system, and has more advantages in cost and weight.
YE Bo   +4 more
doaj   +2 more sources

Reliability Evaluation for Cable-Spring Folding Wing Considering Synchronization of Deployable Mechanism

open access: yesActuators, 2021
The cable-spring folding wing is a novel type of rigid-flexible coupling structure for missiles, which is composed of several sets of deployable mechanisms, with each composed of a wheel-rope transmission system and a parallel spring driving mechanism ...
Yun Gao   +3 more
doaj   +2 more sources

Design and Aerodynamic Analysis of Flapping Mechanism of Two-stage Flapping-wing Aircrafts

open access: yesJixie chuandong, 2022
In order to improve the flight performance of the flapping-wing aircraft, this study draws on the characteristics of the flight movement of large birds, designs a new two-stage foldable bionic flapping-wing mechanism, and establishes the kinematic and ...
Sheng Dian   +3 more
doaj   +2 more sources

Improved Active Disturbance Rejection Control for Multibody Folding Wing Under Variable Loads

open access: yesShanghai Jiaotong Daxue xuebao
To address the issue of multi-body folding wings being subjected to aerodynamic load changes, gravity reversal, and external disturbances during coordinated tilting, an improved active disturbance rejection control (ADRC) strategy based on the ...
HAN Yifan, CHEN Boyi, LIU Yanbin, CHEN Jinbao
doaj   +2 more sources

Design and Performance Study of Small Multirotor UAVs with Adjunctive Folding-Wing Range Extender

open access: yesDrones
Small multi-rotor UAVs face endurance limitations during long-range missions due to high rotor energy consumption and limited battery capacity. This paper proposes a folding-wing range extender integrating a sliding-rotating two-degree-of-freedom folding
Ronghao Zhang   +4 more
doaj   +2 more sources

Testing of Folding Wing-Tip for Gust Load Alleviation in High Aspect Ratio Wing [PDF]

open access: yes, 2019
Folding wing-tips have begun to feature on recent aircraft designs, as a solution for compliance with existing airport gate width, whilst the higher aspect ratio will lead to lower induced drag and better overall fuel efficiency.
Thomas Wilson   +7 more
core   +3 more sources

Sizing of High Aspect Ratio Wing incorporating Folding Wingtips

open access: yes, 2021
Sizing of High Aspect Ratio Wing incorporating Folding ...
Gu Huaiyuan   +2 more
core   +1 more source

Analysis of Motion Characteristics of Bionic Morphing Wing Based on Sarrus Linkages

open access: yesApplied Sciences, 2022
The variant aircraft can flexibly change its shape to achieve the best sports performance under different flight environments and flight missions. Changing the shape of the wings is a major form of variant aircraft.
Zhong Yun   +3 more
doaj   +1 more source

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