Results 11 to 20 of about 1,744,450 (275)
Miniaturization re-establishes symmetry in the wing folding patterns of featherwing beetles. [PDF]
Sci Rep, 2020 Most microinsects have feather-like bristled wings, a state known as ptiloptery, but featherwing beetles (family Ptiliidae) are unique among winged microinsects in their ability to fold such wings.
Petrov PN, Farisenkov SE, Polilov AA.
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Aerodynamic Characteristics of a Z-Shaped Folding Wing
Aerospace, 2023 Z-shaped folding wings have the potential to enhance the flight performance of an aircraft, contingent upon its mission requirements. However, the current scope of research on unmanned aerial vehicles (UAVs) with Z-shaped folding wings primarily focuses ...
Yongchang Huang +2 more
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Advanced Intelligent Systems, 2023 Avian flapping strategies have the potential to revolutionize future drones as they may considerably improve agility, increase slow speed flight capability, and extend the aerodynamic performance. The study of live birds is time‐consuming, laborious, and,
Enrico Ajanic +4 more
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Actuators, 2021 The cable-spring folding wing is a novel type of rigid-flexible coupling structure for missiles, which is composed of several sets of deployable mechanisms, with each composed of a wheel-rope transmission system and a parallel spring driving mechanism ...
Yun Gao +3 more
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Quantifying Nature’s Bistability: Simulation of Earwig Fan Folding [PDF]
BiomimeticsIn 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
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Wing twist and folding work in synergy to propel flapping wing animals and robots [PDF]
2024 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)We designed and built a three degrees-of-freedom (DOF) flapping wing robot, Flapperoo, to study the aerodynamic benefits of wing folding and twisting. Forces and moments of this physical model are measured in wind tunnel tests over a Strouhal number range of St = 0.2 - 0.4, typical for animal flight.
Xiaozhou Fan +2 more
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The Influence of Wing Membrane Elasticity on Aerodynamics in a Bat-Inspired Flapping Robot [PDF]
BiomimeticsThis study investigates the aerodynamic effects of wing membrane elasticity inspired by bats, which exhibit exceptional maneuverability and stability. By mimicking bat wing folding and flapping motions, a 2-DOF flapping mechanism was developed to examine
Szu-I Yeh, Chia-Hsu Chiang
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Gust Response and Alleviation of Avian-Inspired In-Plane Folding Wings [PDF]
BiomimeticsThe in-plane folding wing is one of the important research directions in the field of morphing or bionic aircraft, showing the unique application value of enhancing aircraft maneuverability and gust resistance.
Haibo Zhang +4 more
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Fundamental Research, 2022 Raptors can change the shape and area of their wings to an exceptional degree in a fast and efficient manner, surpassing other birds, insects, or bats.
Di Tang +11 more
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Local weakening of cell-extracellular matrix adhesion triggers basal epithelial tissue folding [PDF]
The EMBO JournalDuring development, epithelial sheets sculpt organs by folding, either apically or basally, into complex 3D structures. Given the presence of actomyosin networks and cell adhesion sites on both sides of cells, a common machinery mediating apical and ...
Andrea Valencia-Expósito +4 more
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