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Probabilistic Analysis and Design of a Raked Wing Tip for a Commercial Transport

Author
Stroud, W. Jefferson
Published
September 10, 2008.
Physical Description
1 electronic document
Additional Creators
Ransom, Jonathan B., Mason Brian H., Chen, Tzi-Kang, and Padula, Sharon L.
Online Version

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Unclassified, Unlimited, Publicly available.
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Summary
An approach for conducting reliability-based design and optimization (RBDO) of a Boeing 767 raked wing tip (RWT) is presented. The goal is to evaluate the benefits of RBDO for design of an aircraft substructure. A finite-element (FE) model that includes eight critical static load cases is used to evaluate the response of the wing tip. Thirteen design variables that describe the thickness of the composite skins and stiffeners are selected to minimize the weight of the wing tip. A strain-based margin of safety is used to evaluate the performance of the structure. The randomness in the load scale factor and in the strain limits is considered. Of the 13 variables, the wing-tip design was controlled primarily by the thickness of the thickest plies in the upper skins. The report includes an analysis of the optimization results and recommendations for future reliability-based studies.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 20080040187.
Paper Number 5824.
12th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference; 10-12 Sep. 2008; Victoria; Canada.
Terms of Use and Reproduction
Copyright, Distribution as joint owner in the copyright.
View MARC record | catkey: 15998874