Improved Aerodynamic Performance Combining Control Surface Deflections and Aeroelastic Tailoring

Eduardo Krupa, Jonathan Cooper, Alberto Pirrera, Raj Nangia

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

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Abstract

The interplay between passive and active wing shape adaptation for improved aerostructural performance is analysed in this paper. Shape adaptation is sought as a means for load redistribution, alleviation and, in turn, weight saving. Passive aeroelastic responses are obtained by designing bend-twist coupling into a hybrid wing-box with composite skins. Active shape variations are realised via trailing edge control surfaces (similar to ailerons), distributed along the full wingspan. A bi-level design framework, incorporating gradient-based and particle swarm optimisations, is utilised to search the wing’s design space for beneficial aerostructural properties and control surface deflection scheduling. Optimisation design variables include structural dimensions, composite lamination parameters, stringer position, rib orientation and spacing, and the deflections of individual control surfaces. Design constraints consist of allowable stresses and deformations, structural stability (i.e. buckling) and composites manufacturing guidelines. The design approach is shown to produce weight reductions and improved aerodynamic performance.
Original languageEnglish
Title of host publication2016 Applied Aerodynamics Conference
Subtitle of host publication Evolution & Innovation Continues - The Next 150 years of Concepts, Design and Operations
PublisherRoyal Aeronautical Society
Pages12
Number of pages13
ISBN (Print)1857683714
Publication statusPublished - 19 Jul 2016

Keywords

  • aeroelastic tailoring
  • load alleviation
  • composite optimisation
  • active trailing edge devices

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