Aerodynamic study of corrugated skins for morphing wing applications

C Thill, JD Downsborough, JS Lai, IP Bond, DP Jones

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

40 Citations (Scopus)

Abstract

Corrugated structures offer a potential solution for morphing wing skin applications due to their anisotropic behaviour that allows chordwise camber and length changes. Aerofoils with corrugated skins in the aft 1/3 of the chordwise section have been studied experimentally and computationally using various corrugation shapes and forms (sinusoidal, trapezoidal and triangular) at different Reynolds numbers. The study showed that the aerodynamic performance is highly dependent on corrugation amplitude, wavelength, gradient (combination of amplitude and wavelength) and Reynolds number. Evidence is given highlighting that penalties for having a nonsmooth surface in the aft 1/3 of the chordwise section of an aerofoil can be eliminated for the lift curve slope and minimised for the zero lift drag coefficient.
Translated title of the contributionAerodynamic study of corrugated skins for morphing wing applications
Original languageEnglish
Pages (from-to)237 - 244
Number of pages8
JournalThe Aeronautical Journal
Volume114
Publication statusPublished - Apr 2010

Bibliographical note

Publisher: Royal Aeronautical Society

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