Results 11 to 20 of about 3,197 (203)
Morphing airfoils analysis using dynamic meshing [PDF]
International Journal of Numerical Methods for Heat & Fluid Flow, 2018 Purpose The purpose of this paper is to use dynamic meshing to perform CFD analyses of a NACA 0012 airfoil fitted with a morphing trailing edge (TE) flap when it undergoes static and time-dependent morphing. The steady CFD predictions of the original and morphing airfoils are validated against published data.
Abdessemed, Chawki +3 more
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Designs, 2022 An aerodynamic optimization for a Droop-Nose Leading-Edge (DNLE) morphing of a well-known UAV, the UAS-S45, is proposed, using a novel Black Widow Optimization (BWO) algorithm.
Musavir Bashir +3 more
doaj +1 more source
Designs, 2022 This work presents an aerodynamic and structural optimization for a Droop Nose Leading Edge Morphing airfoil as a high lift device for the UAS-S45. The results were obtained using three optimization algorithms: coupled Particle Swarm Optimization-Pattern
Musavir Bashir +5 more
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Near Stall Unsteady Flow Responses to Morphing Flap Deflections
Fluids, 2021 The unsteady flow characteristics and responses of an NACA 0012 airfoil fitted with a bio-inspired morphing trailing edge flap (TEF) at near-stall angles of attack (AoA) undergoing downward deflections are investigated at a Reynolds number of 0.62 × 106 ...
Chawki Abdessemed +2 more
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Optimization and design of an aircraft’s morphing wing-tip demonstrator for drag reduction at low speed, Part I – Aerodynamic optimization using genetic, bee colony and gradient descent algorithms [PDF]
, 2017 In this paper, an ‘in-house’ genetic algorithm is described and applied to an optimization problem for improving the aerodynamic performances of an aircraft wing tip through upper surface morphing.
Acotto, J +7 more
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Aerodynamic Shape Optimisation of a Camber Morphing Airfoil and Noise Estimation
Aerospace, 2022 In order to decrease the emitted airframe noise by a two-dimensional high-lift configuration during take-off and landing performance, a morphing airfoil has been designed through a shape design optimisation procedure starting from a baseline airfoil (NLR
Robert Valldosera Martinez +2 more
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Alleviation of Dynamic Stall Moments by Morphing Flap
Hangkong gongcheng jinzhan, 2021 Active deflection of trailing edge control surface can reduce the adverse effect of airfoil dynamic stall on aerodynamic characteristics.This study set out to investigate the performance of morphing flap on dynamic stall alleviation.
OUYANG Yan +3 more
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Aerodynamic and aeroacoustic performance of airfoils with morphing structures [PDF]
, 2015 Aerodynamic and aeroacoustic performance of airfoils fitted with morphing trailing edges are investigated using a coupled structure/fluid/noise model.
Ai, Qing +3 more
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Transonic flutter characteristics of an airfoil with morphing devices [PDF]
Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2020 An investigation into transonic flutter characteristic of an airfoil conceived with the morphing leading and trailing edges has been carried out. Computational fluid dynamics (CFD) is used to calculate the unsteady aerodynamic force in transonic flow. An aerodynamic reduced order model (ROM) based on autoregressive model with exogenous input (ARX) is ...
Shun He, Shijun Guo, Wenhao Li
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Aerospace, 2019 The presented aircraft is capable of alternating between two singular working points by folding the exterior surfaces of the wing underneath the interior surfaces. This allows for a significant change in wingspan, lift surfaces, aspect ratio and airfoil (
Amit Geva, Haim Abramovich, Rimon Arieli
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