Results 101 to 110 of about 2,741 (253)
, 2023 In this paper, the flutter instability of a conventional two-stage axially moving telescopic UAV wing is investigated. To this aim, and to be as close as possible to the reality, the effects of temporal variation of mass and length, due to the movement ...
Mohammadreza Amoozgar +5 more
core +1 more source
Nihon Kikai Gakkai ronbunshu, 2019 The double cylindrical tube achieving an arbitrary twist distribution was applied to a spar of a twist morphing structure and the applicability was demonstrated through a twisting experiment and a wind tunnel test. In the previous study, we developed the
Atsushi ASO +2 more
doaj +1 more source
Distribution under climate change of Anemone coronaria: linking flower colour and seed dispersal
Nordic Journal of Botany, EarlyView.Flower colour polymorphism is driven by divergent selection regimes on the colour morphs across time and space. Anemone coronaria, a colour‐polymorphic geophyte with red, purple, and white flowers, displays a geographic pattern along Israel's aridity gradient: polymorphic populations are restricted to Mediterranean climates, while monomorphic‐red ...
Tzlil Labin +3 more
wiley +1 more source
PLANTS, PEOPLE, PLANET, EarlyView.Dust, a common form of air pollution, is particularly problematic on roadsides, which are important habitats for plants and pollinators. We investigated whether and how road dust affects plant sexual reproduction using Primula chungensis in a biodiversity hotspot. Our study provides compelling evidence that road dust can harm plant reproductive success
Yong‐Peng Cha +4 more
wiley +1 more source
Sliding Mode Control in Aerospace Applications: A Survey
International Journal of Robust and Nonlinear Control, EarlyView.ABSTRACT Sliding mode control (SMC) enjoys robustness to matched and unmatched (in the case of minimum phase input‐output dynamics) bounded perturbations, and finite time convergence. Second‐order and higher‐order sliding mode control systems (2‐SMC/HOSMC) retain all the advantages of sliding mode control, but in addition can be applied to systems of ...
Yuri Shtessel, Christopher Edwards
wiley +1 more source
The design of adaptive structures for wing morphing
, 2006 This research is concerned with the design of adaptive structures for achieving global multi-shape morphing aerodynamic configurations, by using slender structures.
Ursache, Narcis M., Ursache, Narcis M
core
Methods for designing the next generation of aircraft architectures using topology optimisation [PDF]
, 2010 The need from energy efficient transportation has resulted in a growing interest in new aircraft configurations such as the Blended Wing Body. There is very little collective knowledge on the optimal structural layouts of these aircraft, and the ...
Eves, James, Eves, Jamie Samantha
core
Actuation Strategies for Underwater Jet‐Propelled Soft Robots
Journal of Field Robotics, EarlyView.ABSTRACT This review article examines jet‐propulsion mechanisms in underwater soft robotic systems, focusing exclusively on physically fabricated and experimentally validated robots. Covering research published from 2013 to 2025, this study classifies and evaluates jet‐propulsion robots based on their actuation mechanisms.
Angel Kitone +3 more
wiley +1 more source
SmartBot, EarlyView.Ionogels dynamically and functionally couple ionic liquids with polymer networks, enabling multiscale programmable deformation and motion under electrical, magnetic, optical, thermal, humidity, and chemical stimuli. This article systematically elucidates the constituent components, structural design, and multiscale actuation mechanisms of ionogel ...
Dezhou Cao +5 more
wiley +1 more source
Physical Anchoring‐Assisted Mechanically Guided Assembly for Material‐Independent 3D Mesostructures
Small, EarlyView.Conventional mechanically guided 3D assembly relies on selective chemical bonding between 2D precursors and elastomeric substrates, imposing fundamental limitations on material compatibility and scalability. Here, we present a physically anchored, buckling‐guided assembly platform based on a rod array patterned elastomeric substrate (RPES).
Yeonhee Heo +7 more
wiley +1 more source