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Integrating aerodynamics and structures in the minimum weight design of a supersonic transport wingAn approach is presented for determining the minimum weight design of aircraft wing models which takes into consideration aerodynamics-structure coupling when calculating both zeroth order information needed for analysis and first order information needed for optimization. When performing sensitivity analysis, coupling is accounted for by using a generalized sensitivity formulation. The results presented show that the aeroelastic effects are calculated properly and noticeably reduce constraint approximation errors. However, for the particular example selected, the error introduced by ignoring aeroelastic effects are not sufficient to significantly affect the convergence of the optimization process. Trade studies are reported that consider different structural materials, internal spar layouts, and panel buckling lengths. For the formulation, model and materials used in this study, an advanced aluminum material produced the lightest design while satisfying the problem constraints. Also, shorter panel buckling lengths resulted in lower weights by permitting smaller panel thicknesses and generally, by unloading the wing skins and loading the spar caps. Finally, straight spars required slightly lower wing weights than angled spars.
Document ID
19920019192
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Barthelemy, Jean-Francois M. (Lockheed Engineering and Sciences Co. Hampton, VA., United States)
Wrenn, Gregory A. (Lockheed Engineering and Sciences Co. Hampton, VA., United States)
Dovi, Augustine R. (Lockheed Engineering and Sciences Co. Hampton, VA., United States)
Coen, Peter G. (NASA Langley Research Center Hampton, VA, United States)
Hall, Laura E. (Unisys Corp. Hampton, VA., United States)
Date Acquired
September 6, 2013
Publication Date
April 1, 1992
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
NAS 1.15:107586
NASA-TM-107586
Meeting Information
Meeting: AIAA/ASCE/ASME/AHS/ASC 33rd Structures, Structural Dynamics and Materials Conference
Location: Dallas, TX
Country: United States
Start Date: April 13, 1992
End Date: April 15, 1992
Accession Number
92N28435
Funding Number(s)
PROJECT: RTOP 505-63-50-06
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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