Surface actuated variable-camber and variable-twist morphing wings using piezocomposites

Onur Bilgen, Michael I. Friswell, Kevin B. Kochersberger, Daniel J. Inman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

25 Scopus citations

Abstract

A surface actuated variable-camber morphing airfoil employing a type of piezoceramic composite actuator known as Macro-Fiber Composite is presented. The proposed airfoil employs two cascading active surfaces and a pair of optimized pinned boundary conditions. The optimized locations of pinned boundary conditions and the geometric features allow for a variable and smooth deformation in both directions from a flat camber line. The continuity of the airfoil surface is achieved by using a single substrate that wraps around the airfoil shape. This substrate forms the surface of the airfoil and it serves as the host material for the two cascading bimorph actuators. The cascading bimorphs are pinned together at the trailing edge with a compliant hinge, which is also formed by the substrate material. The paper focuses on the theoretical static-aeroelastic response characterization. A parametric study of the fluid-structure interaction problem is employed to optimize the geometric parameters and the boundary conditions of the variable-camber airfoil. The coupled treatment of the fluid-structure interaction allows the realization of a design that is not only feasible in a bench top experiment, but that can also sustain large aerodynamic loads. The paper identifies the effects of four important structural parameters to achieve the highest possible lift coefficient and lift-to-drag ratio. Practical recommendations are presented to achieve a working prototype.

Original languageEnglish (US)
Title of host publication52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
DOIs
StatePublished - 2011
Event52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference - Denver, CO, United States
Duration: Apr 4 2011Apr 7 2011

Publication series

NameCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
ISSN (Print)0273-4508

Other

Other52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
CountryUnited States
CityDenver, CO
Period4/4/114/7/11

All Science Journal Classification (ASJC) codes

  • Architecture
  • Materials Science(all)
  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

Keywords

  • Bimorph
  • Low RE number
  • Macro-Fiber Composite
  • Morphing
  • Piezoceramic
  • Variable-camber airfoil

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