Combined strength and aeroelastic wing synthesis via constraint approximationA numerical optimization program using constraint approximations for preliminary sizing of wing structural design parameters to satisfy simultaneous strength and aeroelastic requirements is described. The effects of wing flexibility on loads and flutter are included. The iterative procedure approximates wing internal load distributions and flutter response in generating design constraints. Though a linear Taylor series approximation to the variation of flutter speed is made, constraints in general are formulated as nonlinear and solved in a minimum weight problem using a feasible directions search. The technique is demonstrated for the determination of the optimal ply orientations and for simultaneous sizing for strength and flutter with simple constraint approximations.
Document ID
19790044277
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Mullen, J., Jr. (Nielsen Engineering and Research, Inc. Mountain View, Calif., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1979
Subject Category
Structural Mechanics
Report/Patent Number
AIAA PAPER 79-0724
Meeting Information
Meeting: Structures, Structural Dynamics, and Materials Conference