Aeroelastic Modelling of Highly Flexible Wings

Chris Howcroft, Robbie G Cook, Dario E Calderon, Luke A Lambert, Michele Castellani, Jonathan E Cooper, Mark H Lowenberg, Simon A Neild, Etienne B Coetzee

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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Abstract

This paper details five aeroelastic modelling methods applied to the study of an example high aspect ratio wing subject to high loads resulting in large structural deformations. Each method is discussed in turn and example static results from each are compared. Overall agreement is illustrated between the methods for key quantities of interest although aerodynamic modelling choices regarding the orientation of aero forces is observed to play a significant role in the agreement between predicted distributed loads and deflections. Quantitative differences resulting from linearisation of the wing model are also presented and discussed. It is found that by linearising the problem, wing deflection, aerodynamic forces and root bending are all over-estimated. Large differences are also observed between linear and nonlinear predictions of root twist, however the modelling of drag effects is deemed important to the exact nature of the observed discrepancy. Altogether, linearised assumptions are shown to have a noticeable impact on the accuracy of predicted results for the considered wing test case and are deemed unsuitable in isolation for the analysis of this class of flexible problem.

Original languageEnglish
Title of host publication15th Dynamics Specialists Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc. (AIAA)
Number of pages26
ISBN (Print)9781624103988
DOIs
Publication statusPublished - 4 Jan 2016
Event15th Dynamics Specialists Conference, 2016 - San Diego, United States
Duration: 4 Jan 20168 Jan 2016

Conference

Conference15th Dynamics Specialists Conference, 2016
CountryUnited States
CitySan Diego
Period4/01/168/01/16

Structured keywords

  • AWI

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