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Comparison of Curvilinear Stiffeners and Tow Steered Composites for Aeroelastic Tailoring of Transports (2016)

Stanford, Bret K. ; Jutte, Christine V.

In: CASI

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Publication Date: 2019-07-13

Description: A series of aeroelastic optimization problems are solved on a high aspect ratio wingbox of the Common Research Model, in an effort to minimize structural mass under coupled stress, buckling, and flutter constraints. Two technologies are of particular interest: tow steered composite laminate skins and curvilinear stiffeners. Both methods are found to afford feasible reductions in mass over their non-curvilinear structural counterparts, through both distinct and shared mechanisms for passively controlling aeroelastic performance. Some degree of diminishing returns are seen when curvilinear stiffeners and curvilinear fiber tow paths are used simultaneously.

Keywords: Aerodynamics

Type: NF1676L-22826 , 2016 AIAA Aviation Conference; Jun 13, 2016 - Jun 17, 2016; Washington, DC; United States

Format: application/pdf

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