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Static aeroelastic analysis and tailoring of missile control finsA concept for enhancing the design of control fins for supersonic tactical missiles is described. The concept makes use of aeroelastic tailoring to create fin designs (for given planforms) that limit the variations in hinge moments that can occur during maneuvers involving high load factors and high angles of attack. It combines supersonic nonlinear aerodynamic load calculations with finite-element structural modeling, static and dynamic structural analysis, and optimization. The problem definition is illustrated. The fin is at least partly made up of a composite material. The layup is fixed, and the orientations of the material principal axes are allowed to vary; these are the design variables. The objective is the magnitude of the difference between the chordwise location of the center of pressure and its desired location, calculated for a given flight condition. Three types of constraints can be imposed: upper bounds on static displacements for a given set of load conditions, lower bounds on specified natural frequencies, and upper bounds on the critical flutter damping parameter at a given set of flight speeds and altitudes. The idea is to seek designs that reduce variations in hinge moments that would otherwise occur. The block diagram describes the operation of the computer program that accomplishes these tasks. There is an option for a single analysis in addition to the optimization.
Document ID
19890015798
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mcintosh, S. C., Jr. (McIntosh Structural Dynamics, Inc., Mountain View CA., United States)
Dillenius, M. F. E. (Nielsen Engineering and Research, Inc., Mountain View CA., United States)
Date Acquired
September 5, 2013
Publication Date
April 1, 1989
Publication Information
Publication: NASA. Langley Research Center, Recent Advances in Multidisciplinary Analysis and Optimization, Part 1
Subject Category
Aircraft Design, Testing And Performance
Accession Number
89N25169
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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