Results 91 to 100 of about 1,495 (258)

Optimal design of an aeroelastic wing structure with seamless control surfaces [PDF]

, 2009
This article presents an investigation into the concept and optimal design of a lightweight seamless aeroelastic wing (SAW) structure for small air vehicles.
M Perera, Guo, Shijun J., S Guo, Perera, Melanie   +3 more
core   +1 more source

Evaluating machine learning models for multi‐species wildlife detection and identification on remote sensed nadir imagery in South African savanna

Wildlife Biology, EarlyView.
This research paper investigates the efficacy of leading machine learning (ML) models for detecting and identifying ungulate species in African savanna using nadir imagery from unmanned aerial vehicles (UAVs). Traditional aerial counting methods, while widely used, suffer from significant limitations in accuracy and precision, in part due to human ...
Paul Allin, Fadel Seydou, Radloff Frans, Andrew Davies, Alison Leslie   +4 more
wiley   +1 more source

SMART MORPHING CONCEPTS AND APPLICATIONS FOR ADVANCED LIFTING SURFACES

, 2009
The aim of this thesis has been the study and implementation of structural solutions for the local or global change of airplanes wing geometry (adaptive wing): they may lead to an increase in aerodynamic efficiency and reduced operating costs and ...
Barbarino, Silvestro
core  

Design & modelling of a composite rudderless aeroelastic fin structure [PDF]

, 2010
This thesis presents the study of a gapless and rudderless aeroelastic fin (GRAF) to enhance the directional stability and controllability of an aircraft. The GRAF concept was proposed and developed in the wake of previous research, targeted to improve
Trapani, Matteo
core  

3D-Printed Wings with Morphing Trailing-Edge Technology

, 2021
In recent years, various groups have attempted to improve aircraft efficiency using wings with morphing trailing-edge technology. Most of these solutions are difficult to manufacture or have limited morphing capability.
Hunsaker, Douglas F., Moulton, Benjamin C.   +1 more
core   +1 more source

Optical Fiber Sensor Performance Evaluation in Soft Polyimide Film with Different Thickness Ratios

Sensors, 2019
To meet the application requirements of curvature measurement for soft biomedical robotics and flexible morphing wings of aircraft, the optical fiber Bragg grating (FBG) shape sensor for soft robots and flexible morphing wing was implemented.
Yanlin He, Xu Zhang, Lianqing Zhu, Guangkai Sun, Xiaoping Lou, Mingli Dong   +5 more
doaj   +1 more source

High nitrogen loading impacts the temperature‐size rule and heat tolerance in a nettle‐feeding butterfly

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Host‐plant quality and ambient temperature are key environmental drivers of herbivorous insect performance, affecting growth, development, and survival. While temperature accelerates physiological processes in ectothermic insects, nutrient limitation in host plants can ...
Berber M. J. W. Meulepas, Thomas Merckx, Hans Van Dyck, Dirk Maes, Wilco C. E. P. Verberk   +4 more
wiley   +1 more source

Design and Structural Analysis of Morphing Wings

, 2019
Many natural flyers and marine swimmers can morph their wings during a number of unsteady maneuverings. With such wing morphing they are able to control the unsteady aerodynamic forces.
Fernandez, Nicholas
core  

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, Ziang Zhang, Xiaojuan Mo, Yonghong Zhang   +4 more
doaj   +1 more source

Repeated trends in altitudinal gradients of diversity: How habitat filtering and biotic interactions structure ecological communities

Journal of Animal Ecology, EarlyView.
This study reveals that tropical butterfly communities show remarkably consistent elevational patterns of diversity and phylogenetic structure across regions with contrasting evolutionary histories, demonstrating how regional species pools and local ecological factors jointly shape biodiversity along altitudinal gradients.
Raphaël Fougeray, Arlety Roy, Christelle Penager, Guillaume Correa Pimpao, Ronald Mori Pezo, Léo‐Paul Charlet, Nino Page, Ombeline Sculfort, Stéphanie Gallusser, Marianne Elias, Melanie McClure   +10 more
wiley   +1 more source