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Continuum aeroelastic model and flutter analysis for a variable-span morphing wing

  • Beihang University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A linear aeroelastic continuum model for a variable-span wing is developed. Considering the fixed inboard part and the movable outboard part of the wing, a stepped Euler-Bernoulli beam with three jumped discontinuities in its spatial span is used for structural modeling. The dynamic analysis of stepped beam is introduced by a dimensionless form. The time-domain aerodynamic forces are calculated by a reduced-order unsteady vortex lattice model. Then the first-order state-space aeroelastic formulations are built by using the Galerkin method. The impact of the different wing configurations is of particular interest for understanding the fundamental aeroelastic behavior of variable-span wing. To clarify the implementation of the proposed method, a simple variable-span wing with the basic parameters of the Goland wing is studied, and numerical simulations are provided to demonstrate the flutter speeds and frequencies for different wing configurations.

Original languageEnglish
Title of host publicationMechatronics and Applied Mechanics II
Pages1136-1143
Number of pages8
DOIs
StatePublished - 2013
Event2nd International Conference on Mechatronics and Applied Mechanics, ICMAM 2012 - , Taiwan, Province of China
Duration: 8 Dec 20129 Dec 2012

Publication series

NameApplied Mechanics and Materials
Volume300-301
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2nd International Conference on Mechatronics and Applied Mechanics, ICMAM 2012
Country/TerritoryTaiwan, Province of China
Period8/12/129/12/12

Keywords

  • Flutter
  • Morphing aircraft
  • Stepped beam
  • Unsteady vortex lattice
  • Variable-span wing

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