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Integrating aerodynamics and structures in the minimum weight design of a supersonic transport wing
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Wrenn, Gregory A. Barthelemy, Jean-Francois M. Hall, Laura E. Dovi, Augustine R. Coen, Peter G. |
| Copyright Year | 1992 |
| Description | An 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. |
| File Size | 992886 |
| Page Count | 16 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19920019192 |
| Archival Resource Key | ark:/13960/t6tx87p1k |
| Language | English |
| Publisher Date | 1992-04-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Design, Testing And Performance Structural Members Aluminum Unloading Aerodynamics Aircraft Design Convergence Aircraft Models Errors Sensitivity Wings Layouts Supersonic Transports Aeroelasticity Buckling Wing Loading Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
