Results 81 to 90 of about 25,283 (254)

Design Challenges to Expand the Functionality of Drones: Deformable Rotorcraft and Nature‐Inspired Flapping Drones

open access: yesAdvanced Intelligent Systems, EarlyView.
This review systematically analyzes deformable drones, including extendable, foldable, and tilting configurations, along with nature‐inspired flapping rotorcraft. By classifying deformation principles and structural mechanisms, design trade‐offs, functional capabilities, and future development potential are highlighted.
Ju‐Hee Lee   +9 more
wiley   +1 more source

Design of Flapping Wing Aircraft based on Crank Chute Mechanism

open access: yesJixie chuandong, 2022
Aiming at the problem of phase lag in flapping wing of traditional flapping wing aircraft,a kind of flapping wing aircraft driven by crank chute mechanism is designed,its modeling and simulation analysis are carried out,the prototype is made and the ...
Qi Li, Yu Cai, Xiansheng Huang, Bin Liu
doaj  

Three-dimensional flows around low-aspect-ratio flat-plate wings at low Reynolds numbers [PDF]

open access: yes, 2009
Three-dimensional flows over impulsively translated low-aspect-ratio flat plates are investigated for Reynolds numbers of 300 and 500, with a focus on the unsteady vortex dynamics at post-stall angles of attack. Numerical simulations, validated by an oil
Colonius, Tim, Kunihiko, Taira
core   +1 more source

Active Control of Flapping Wings Using Wing Deformation

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, 2009
A new method for the attitude control of a flapping-wing aircraft is proposed. In this method, the variations in wing deformation, that is, the feathering angle and the camber, are controlled by pulling the wing at a certain point with a thread connected to a servomotor.
Hiroshi TOKUTAKE   +2 more
openaire   +2 more sources

Adults With Intellectual Disability Moving out of the Family Home Using the National Disability Insurance Scheme: Family Members' Planning Experiences

open access: yesAustralian Journal of Social Issues, EarlyView.
ABSTRACT For adults with intellectual disability and their families, future planning and moving out of the family home in Australia will increasingly occur within the context of the National Disability Insurance Scheme (NDIS). As a market‐based, individualised funding system its impact on this transition remains largely unknown. This paper reports on a
I. Belperio   +5 more
wiley   +1 more source

The Efficiency of a Hybrid Flapping Wing Structure—A Theoretical Model Experimentally Verified

open access: yesAerospace, 2016
To propel a lightweight structure, a hybrid wing structure was designed; the wing’s geometry resembled a rotor blade, and its flexibility resembled an insect’s flapping wing.
Yuval Keren   +2 more
doaj   +1 more source

The aerodynamic effects of wing rotation and a revised quasi-steady model of flapping flight [PDF]

open access: yes, 2002
We used a dynamically scaled model insect to measure the rotational forces produced by a flapping insect wing. A steadily translating wing was rotated at a range of constant angular velocities, and the resulting aerodynamic forces were measured using a ...
Dickinson, Michael H., Sane, Sanjay P.
core   +1 more source

Butterflies of curriculum realisation: Investigating early implementation of the Curriculum for Wales

open access: yesThe Curriculum Journal, EarlyView.
Abstract Curriculum reform provides a vital opportunity for nations to ensure learners are equipped to fully participate as citizens in the 21st century. This paper presents an understanding of educators’ response to curriculum reform, and some of its enablers and barriers.
Alison Glover   +5 more
wiley   +1 more source

Raman Signature of the Wings of the Globe Skimmer Dragonfly: Pantala flavescens

open access: yesJournal of Raman Spectroscopy, EarlyView.
Raman spectroscopy is used to confirm the presence of aliphatic and aromatic hydrocarbons and related derivatives including aldehydes, halides, alcohols, acids, esters, and phenols on the wings of Pantala flavescens. The analysis indicates that wing‐surface lipid composition is largely consistent across the three main ecological zones in Ghana. Notably,
Rachel Desulme   +19 more
wiley   +1 more source

The Spectrum of Abnormal Tongue Movements: Review of Phenomenology, Etiology, and Differential Diagnosis

open access: yesMovement Disorders Clinical Practice, EarlyView.
ABSTRACT Background Classifying abnormal tongue movements is challenging due to their varied presentations and limited visibility compared to other body parts. Accurate identification of the phenomenology guides physical examination and can point to specific diagnoses.
Nathaniel Bendahan   +4 more
wiley   +1 more source

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