Results 31 to 40 of about 7,443 (257)
Leading-Edge Vortex Lift (LEVL) Sample Probe for Venusian Atmosphere
Aerospace, 2022 Can a small, lightweight, free-falling sample probe be slowed enough in the Venusian atmosphere to run a 10 min microelectromechanical systems (MEMS) ion gas micro spectrometer, without adding a propulsion systems or explosives and parachutes to the ...
Christopher Isaac, Nick Jones
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Evolution of the leading-edge vortex over a flapping wing mechanism
Journal of Mechanical Engineering and Sciences, 2020 Leading-edge vortex governs the aerodynamic force production of flapping wing flyers. The primary factor for lift enhancement is the leading-edge vortex (LEV) that allows for stall delay that is associated with unsteady fluid flow and thus generating ...
Muhamad Ridzuan Arifin +6 more
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Aerodynamic improvement of a delta wing in combination with leading edge flaps
Theoretical and Applied Mechanics Letters, 2017 Recently, various studies of micro air vehicle (MAV) and unmanned air vehicle (UAV) have been reported from wide range points of view. The aim of this study is to research the aerodynamic improvement of delta wing in low Reynold’s number region to ...
Tadateru Ishide, Mao Itazawa
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Leading-Edge Roughness Affecting Diamond-Wing Aerodynamic Characteristics
Aerospace, 2018 Diamond wing configurations for low signature vehicles have been studied in recent years. Yet, despite numerous research on highly swept, sharp edged wings, little research on aerodynamics of semi-slender wings with blunt leading-edges exists. This paper
Andrei Buzica +3 more
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Leading-edge vortex dynamics on plunging airfoils and wings
Journal of Fluid Mechanics, 2022 The vortex dynamics of leading-edge vortices on plunging high-aspect-ratio (AR = 10) wings and airfoils were investigated by means of volumetric velocity measurements, numerical simulations and stability analysis to understand the deformation of the leading-edge vortex filament and spanwise instabilities.
O. Son +5 more
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Leading-Edge Vortex Characteristics of Low-Aspect-Ratio Sweptback Plates at Low Reynolds Number
Applied Sciences, 2021 A sweptback angle can directly regulate a leading-edge vortex on various aerodynamic devices as well as on the wings of biological flyers, but the effect of a sweptback angle has not yet been sufficiently investigated.
Jong-Seob Han, Christian Breitsamter
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Hovering hummingbird wing aerodynamics during the annual cycle. I. Complete wing [PDF]
Royal Society Open Science, 2017 The diverse hummingbird family (Trochilidae) has unique adaptations for nectarivory, among which is the ability to sustain hover-feeding. As hummingbirds mainly feed while hovering, it is crucial to maintain this ability throughout the annual cycle ...
Yonathan Achache +2 more
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Applied Sciences, 2022 Semi-open centrifugal pumps are widely used in various fields. However, the tip leakage vortex (TLV) has a malign effect on the impeller flow field.
Bing Qian +5 more
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The leading-edge vortex and quasisteady vortex shedding on an accelerating plate [PDF]
Physics of Fluids, 2010 A computational inquiry focuses on leading-edge vortex (LEV) growth and shedding during acceleration of a two-dimensional flat plate at a fixed 10°–60° angle of attack and low Reynolds number. The plate accelerates from rest with a velocity given by a power of time ranging from 0 to 5.
Chen, Kevin K. +2 more
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Effect of Wavy Leading Edges on Airfoil Trailing-Edge Bluntness Noise
Aerospace, 2023 Among the several noise-generation mechanisms of airfoil self-noise, trailing-edge bluntness noise is an important noise source, which is caused by the vortex shedding at blunt trailing edges.
Yudi Xing +4 more
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