Parametric structural modelling of fish bone active camber morphing aerofoils

Research output: Contribution to journalArticle (Academic Journal)peer-review

10 Citations (Scopus)
345 Downloads (Pure)

Abstract

Camber morphing aerofoils have the potential to significantly improve the efficiency of fixed and rotary wing aircraft by providing significant lift control authority to a wing, at a lower drag penalty than traditional plain flaps. A rapid, mesh-independent and two-dimensional analytical model of the fish bone active camber concept is presented. Existing structural models of this concept are one-dimensional and isotropic and therefore unable to capture either material anisotropy or spanwise variations in loading/deformation. The proposed model addresses these shortcomings by being able to analyse composite laminates and solve for static two-dimensional displacement fields. Kirchhoff–Love plate theory, along with the Rayleigh–Ritz method, are used to capture the complex and variable stiffness nature of the fish bone active camber concept in a single system of linear equations. Results show errors between 0.5% and 8% for static deflections under representative uniform pressure loadings and applied actuation moments (except when transverse shear exists), compared to finite element method. The robustness, mesh-independence and analytical nature of this model, combined with a modular, parameter-driven geometry definition, facilitate a fast and automated analysis of a wide range of fish bone active camber concept configurations. This analytical model is therefore a powerful tool for use in trade studies, fluid–structure interaction and design optimisation.

Original languageEnglish
Pages (from-to)2008-2026
Number of pages19
JournalJournal of Intelligent Material Systems and Structures
Volume29
Issue number9
Early online date4 Mar 2018
DOIs
Publication statusPublished - 1 May 2018

Keywords

  • composite plates
  • Morphing wings
  • orthogonal polynomials
  • penalty method
  • plate theory
  • Rayleigh–Ritz
  • stiffness discontinuities
  • variable camber

Fingerprint Dive into the research topics of 'Parametric structural modelling of fish bone active camber morphing aerofoils'. Together they form a unique fingerprint.

Cite this