Optimal wing planform design for aeroelastic control

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

An integrated aeroservoelastic design synthesis for flutter suppression and gust load reduction using multiple control surfaces is presented. For this multidisciplinary optimization procedure, structural design variables, control system, and aerodynamic design variables, such as wing planform, ply orientation of the composite layer, and control surface size and location, are considered simultaneously. The analysis for a composite wing with control surfaces is conducted by the finite element method. Unsteady aerodynamic forces calculated by the doublet lattice method are approximated as transfer functions of the Laplace variable by Roger's method. The output feedback control scheme is applied to design the active control system. Using a swept wing model, the performance of the control system is investigated. The geometry of wing planform and control surface size and location are determined by using the genetic algorithm. Design objectives are to minimize the control performance index and the root mean square of the gust responses for various airspeeds. Numerical results showed substantial improvements in performance index value as well as the root-mean-square values of the gust responses compared with the baseline wing model.

Original languageEnglish (US)
Pages (from-to)1465-1470
Number of pages6
JournalAIAA Journal
Volume38
Issue number8
StatePublished - Aug 2000

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Planforms
Control surfaces
Control systems
Aerodynamics
Swept wings
Wind effects
Flutter (aerodynamics)
Composite materials
Structural design
Feedback control
Transfer functions
Genetic algorithms
Finite element method
Geometry

ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Optimal wing planform design for aeroelastic control. / Nam, Changho; Chattopadhyay, Aditi; Kim, Youdan.

In: AIAA Journal, Vol. 38, No. 8, 08.2000, p. 1465-1470.

Research output: Contribution to journalArticle

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