Results 11 to 20 of about 311 (175)
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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Aerodynamic and Aeroacoustic Analysis of a Harmonically Morphing Airfoil Using Dynamic Meshing
Acoustics, 2021 This work explores the aerodynamic and aeroacoustic responses of an airfoil fitted with a harmonically morphing Trailing Edge Flap (TEF). An unsteady parametrization method adapted for harmonic morphing is introduced, and then coupled with dynamic ...
Chawki Abdessemed +2 more
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Gradient-Based Aerodynamic Optimization of an Airfoil with Morphing Leading and Trailing Edges
Applied Sciences, 2021 This article presents a gradient-based aerodynamic optimization framework and investigates optimum deformations for a transonic airfoil equipped with morphing leading and trailing edges.
Zhenkai Zhang +4 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
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On the Design of Morphing Airfoils Using Spinal Structures [PDF]
47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference<BR> 14th AIAA/ASME/AHS Adaptive Structures Conference<BR> 7th, 2006 In this paper the design of spinal structures for the control of morphing airfoils is examined. The aim is to find structures that, when suitably loaded, can alter the aerodynamic shape of a cladding that forms the airfoil. Morphing through dierent cambered airfoils to achieve aerodynamic properties for dierent maneuvers is then possible by exploiting ...
Ursache, Narcis M. +2 more
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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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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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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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