Results 51 to 60 of about 2,741 (253)
AIP Advances, 2023 An innovative morphing scheme, i.e., dynamical chordwise retracting and stretching, has been proposed for flapping wings. Its aerodynamic effects have been investigated based on a plunging two-dimensional flat wing.
Kang Liu +4 more
doaj +1 more source
Design, Development and Testing of Shape Shifting Wing Model
Aerospace, 2017 The design and development of morphing (shape shifting) aircraft wings—an innovative technology that has the potential to increase the aerodynamic efficiency and reduce noise signatures of aircrafts—was carried out.
Dean Ninian, Sam M. Dakka
doaj +1 more source
Employing Wing Morphing to Cooperate Aileron Deflection Improves the Rolling Agility of Drones
Advanced Intelligent Systems, 2023 In the wild, gliding birds dodge obstacles or predators by folding and twisting their wings swiftly to perform a rapid roll. Accordingly, the authors strive to explore the feasibility of improving the roll rate of drones through this bird‐inspired ...
Yubin Liu +7 more
doaj +1 more source
Aerospace, 2023 This paper studies the effect of morphing rate on the aeroelasticity of a polymorphing wing capable of active span extension and passive twist/pitch.
Zawar Haider +2 more
doaj +1 more source
New aeroelastic studies for a morphing wing
INCAS BULLETIN, 2010 For this study, the upper surface of a rectangular finite aspect ratio wing, with a laminar airfoil cross-section, was made of a carbon-Kevlar composite material flexible skin. This flexible skin was morphed by use of Shape Memory Alloy actuators for 35 test cases characterized by combinations of Mach numbers, Reynolds numbers and angles of attack. The
Ruxandra Mihaela BOTEZ* +2 more
openaire +2 more sources
Aerospace, 2023 Growing concerns over the CO2 footprint due the exponential demand of the aviation industry, along with the requirements for high aerodynamic performance, cost saving, and manoeuvrability during different phases of a flight, pave the path towards ...
Faisal Mahmood +2 more
doaj +1 more source
Optimal Elastic Wing for Flapping-Wing Robots Through Passive Morphing
IEEE Robotics and Automation Letters, 2023 Flapping wing robots show promise as platforms for safe and efficient flight in near-human operations, thanks to their ability to agile maneuver or perch at a low Reynolds number. The growing trend in the automatization of these robots has to go hand in hand with an increase in the payload capacity.
Ruiz, Cristina +3 more
openaire +2 more sources
A Polymorphing Wing Capable of Span Extension and Variable Pitch
Aerospace, 2022 This paper presents the development of a novel polymorphing wing capable of Active Span morphing And Passive Pitching (ASAPP) for small UAVs. The span of an ASAPP wing can be actively extended by up to 25% to enhance aerodynamic efficiency, whilst its ...
Muhammed S. Parancheerivilakkathil +3 more
doaj +1 more source
Geometrically nonlinear electro-aeroelastic framework for morphing wing with piezoelectric actuators
Nihon Kikai Gakkai ronbunshu, 2019 In this paper, a flexible morphing wing with piezoelectric materials for morphing actuation is studied. The objectives of this paper are 1) to develop an integrated geometrically nonlinear electro-aeroelastic framework, which allows evaluating ...
Natsuki TSUSHIMA +3 more
doaj +1 more source
3D Printing Innovations in Polymeric Porous and Patterned Architecture
Advanced Functional Materials, EarlyView.Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil +13 more
wiley +1 more source