Optimization of airplane wing structures under taxiing loads

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A methodology is presented for the optimum design of aircraft wing structures subjected to taxiing loads. The dynamic stresses induced in the wing as the airplane accelerates or decelerates on the runway during take-off or landing are computed by considering the interaction between the landing gear and the flexible airplane structure. The procedure is capable of taking into account both the effects of discrete runway bumps and the effects of runway unevenness. A numerical step-by-step method is developed for solving the nonlinear differential equations of motion. The optimization methodology is illustrated with two examples. The first example deals with the design of the typical section (symmetric double wedge airfoil). This example is studied by using a graphical procedure mainly to understand qualitatively the behavior of wing structures under taxiing loads and also to obtain a physical insight into the nature of the optimum solution. The second example is concerned with the design of a more realistic wing structure. In this case, the problem is formulated and solved as a constrained nonlinear programming problem based on finite element modeling.

Original languageEnglish
Pages (from-to)469-479
Number of pages11
JournalComputers and Structures
Volume26
Issue number3
DOIs
StatePublished - Jan 1 1987
Externally publishedYes

Fingerprint

Aircraft
Optimization
Decelerate
Flexible Structure
Methodology
Finite Element Modeling
Airport runways
Airfoil
Landing gear (aircraft)
Wedge
Nonlinear Programming
Nonlinear Differential Equations
Accelerate
Equations of Motion
Takeoff
Nonlinear programming
Landing
Airfoils
Equations of motion
Loads (forces)

ASJC Scopus subject areas

  • Computer Science Applications
  • Computational Mechanics

Cite this

Optimization of airplane wing structures under taxiing loads. / Rao, Singiresu S.

In: Computers and Structures, Vol. 26, No. 3, 01.01.1987, p. 469-479.

Research output: Contribution to journalArticle

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