Results 11 to 20 of about 2,685 (198)

Raptor wing morphing with flight speed. [PDF]

J R Soc Interface, 2021
In gliding flight, birds morph their wings and tails to control their flight trajectory and speed. Using high-resolution videogrammetry, we reconstructed accurate and detailed three-dimensional geometries of gliding flights for three raptors (barn owl,Tyto alba; tawny owl,Strix aluco, and goshawk,Accipiter gentilis).
Cheney JA, Stevenson JPJ, Durston NE, Maeda M, Song J, Megson-Smith DA, Windsor SP, Usherwood JR, Bomphrey RJ.   +8 more
europepmc   +7 more sources

Agile perching maneuvers in birds and morphing-wing drones [PDF]

Nature Communications
Avian perching maneuvers are one of the most frequent and agile flight scenarios, where highly optimized flight trajectories, produced by rapid wing and tail morphing that generate high angular rates and accelerations, reduce kinetic energy at impact ...
Valentin Wüest, Simon Jeger, Mir Feroskhan, Enrico Ajanic, Fabio Bergonti, Dario Floreano   +5 more
doaj   +3 more sources

Topology Optimization of Large-Scale 3D Morphing Wing Structures

Actuators, 2021
This work proposes a systematic topology optimization approach for simultaneously designing the morphing functionality and actuation in three-dimensional wing structures.
Peter Dørffler Ladegaard Jensen, Fengwen Wang, Ignazio Dimino, Ole Sigmund   +3 more
doaj   +2 more sources

Drag Performance of Twist Morphing MAV Wing

MATEC Web of Conferences, 2016
Morphing wing is one of latest evolution found on MAV wing. However, due to few design problems such as limited MAV wing size and complicated morphing mechanism, the understanding of its aerodynamic behaviour was not fully explored.
Ismail N.I., Zulkifli A.H., Talib R.J., Zaini H., Yusoff H.   +4 more
doaj   +3 more sources

Gust Response of Spanwise Morphing Wing by Simulation and Wind Tunnel Testing

Aerospace, 2023
The spanwise morphing wing can change its aerodynamic shape to suit its flight environment, thereby having the potential to improve the flight performance of the aircraft, especially in gusty conditions.
Zhuoer Yao, Zi Kan, Daochun Li
exaly   +3 more sources

Adaptive Wing Morphing Strategy and Flight Control Method of a Morphing Aircraft Based on Reinforcement Learning

Xibei Gongye Daxue Xuebao, 2019
The morphing aircraft can change different wing shapes or geometries to achieve the optimal flight performance according to various mission scenarios.

doaj   +2 more sources

Enhanced Range and Endurance Evaluation of a Camber Morphing Wing Aircraft

Biomimetics, 2023
Flight range, endurance, maneuverability, and agility are the key elements that determine an aircraft’s performance. Both conventional and morphing wing aircraft have been well studied and estimated in all aspects of performance.
Bruce W Jo, Tuba Majid
exaly   +3 more sources

Quantifying the dynamic wing morphing of hovering hummingbird. [PDF]

R Soc Open Sci, 2017
Animal wings are lightweight and flexible; hence, during flapping flight their shapes change. It has been known that such dynamic wing morphing reduces aerodynamic cost in insects, but the consequences in vertebrate flyers, particularly birds, are not well understood.
Maeda M, Nakata T, Kitamura I, Tanaka H, Liu H.   +4 more
europepmc   +5 more sources

Design of compliant mechanism-based variable camber morphing wing with nonlinear large deformation

International Journal of Advanced Robotic Systems, 2019
The morphing wing with large deformation can benefit its flight performance a lot in different conditions. In this study, a variable camber morphing wing with compliant leading and trailing edges is designed by large-displacement compliant mechanisms ...
Yaqing Zhang, Wenjie Ge, Xiaojuan Mo
exaly   +2 more sources

Performance Comparison between Optimised Camber and Span for a Morphing Wing

Aerospace, 2015
Morphing technology offers a strategy to modify the wing geometry, and the wing planform and cross-sectional parameters can be optimised to the flight conditions.
Michael I Friswell
exaly   +3 more sources