Results 11 to 20 of about 879 (205)
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 [PDF]
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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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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Gradient-Based Aerodynamic Optimization of an Airfoil with Morphing Leading and Trailing Edges [PDF]
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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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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Development and evaluation of a morphing concept for NACA-63418 airfoil for improved wind energy conversion [PDF]
E3S Web of ConferencesIn areas with low winds, generating enough power from wind turbines is a challenging task. In such conditions, efficient conversion of wind kinetic energy is crucial.
Molale Tshepho B., Zang Bin, Ho Weihua
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Modeling and control of a morphing airfoil structure
, 2020 The aeroelastic modeling and robust control design for a morphing airfoil concept is presented. A finite dimensional linear time invariant aeroelastic model was developed for a multi-input, multi-output morphing airfoil structure. The shape of the airfoil (NACA airfoil series 2415) was controlled by actuators distributed along the top airfoil surface ...
Whitmer, Christopher
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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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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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