Results 81 to 90 of about 450,371 (196)

Nonlinear Folding Wing-Tips for Gust Loads Alleviation [PDF]

open access: yes, 2015
A recent consideration in aircraft design is the use of folding wing-tips with the aim of having higher aspect ratio aircraft with less induced drag, but also meeting airport gate limitations.
Lemmens, Yves   +13 more
core   +1 more source

SemanticST: A Scalable Multi‐Contextual Graph Learning Framework for Uncovering Spatial Niches and Robust Multi‐Sample Integration in Spatial Transcriptomics

open access: yesAdvanced Science, EarlyView.
Technical limitations often let dominant signals overshadow rare cell types and fine‐grained heterogeneity in spatial transcriptomics. SemanticST, a graph neural network using multi‐semantic graph fusion and a novel min‐cut loss, recovers these subtle patterns.
Roxana Zahedi   +7 more
wiley   +1 more source

Hinged Folding Wingtips for Gust Load Alleviation: Bridging Simulation and Flight Testing

open access: yesInternational Journal of Aerospace Engineering
Hinged folding wingtips offer an efficient gust load alleviation method to reduce the wing root bending moment and improve passenger comfort in turbulent conditions.
Quan Liu   +6 more
doaj   +1 more source

Neuromorphic Optical Tracking and Imaging of Randomly Moving Targets Through Dynamic Dense Scattering Media

open access: yesAdvanced Science, EarlyView.
Vision begins not with images but with change: the retina fires only when something moves, handing the brain a stream of spikes. A neuromorphic imaging system adopts the same strategy—an event sensor that sees like the retina, a spiking network that thinks like the brain—to track and reconstruct fully randomly moving targets through tissue (phantom ...
Ning Zhang, Arto Nurmikko
wiley   +1 more source

Component Modal Analysis of a Folding Wing

open access: yes, 2011
This thesis explores the aeroelastic stability of a folding wing with an arbitrary number of wing segments. Simplifying assumptions are made such that it is possible to derive the equations of motion analytically.
Wang, Ivan
core  

Quantifying Nature’s Bistability: Simulation of Earwig Fan Folding

open access: yesBiomimetics
In this work, a numerical tool is presented to simulate the dynamics of insect wing folding by example of the fan folding of the dermapteran hindwing. The scalability of the system is demonstrated by generalising the mechanical behaviour from the small ...
Nele Binder   +3 more
doaj   +1 more source

Atmospheric Water Harvesting Through Polymer Hydrogel Sorbents: Materials Chemistry, Design Strategies, and Applications

open access: yesAdvanced Science, EarlyView.
Polymer‐based hydrogels have emerged as promising materials for atmospheric water harvesting (AWH) due to their high water affinity, tunable network structure, and excellent moisture adsorption‐desorption performance. Functional hydrogel systems enable efficient water capture and controlled release under low‐energy conditions, offering a sustainable ...
Swagata Datta   +6 more
wiley   +1 more source

Gust Impact of a Non-Linear Folding Wing Tip

open access: yes
This contribution presents the implementation and the results of non-linear folding wing tip on a transport aircraft wing at gust impact. Unsteady Reynolds averaged Navier-Stokes -simulation are conducted to evaluate the gust alleviation potential.
Molz, Andreas;Breitsamter, Christian
core   +1 more source

Incorporation of Passive Wing Folding in Flapping Wing Miniature Air Vehicles

open access: yes, 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   +2 more
core   +1 more source

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