Flexible Twist for Pitch Control in a High Altitude Long Endurance Aircraft with Nonlinear Response
Vanessa L. Bond
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Flexible Twist for Pitch Control in a High Altitude Long Endurance Aircraft with Nonlinear Response

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The goal was to demonstrate that scaling the nonlinear response of a full-scale finite element model of a high-altitude long-endurance (HALE) aircraft was possible if the model was aeroelastically and "nonlinearly" scaled. A straight-forward method of scaling the first three natural vibration frequencies and mode shapes, and the first buckling eigenvalue was attempted. In addition to analytical scaling several experiments were accomplished to understand and overcome design challenges of HALE aircraft. One such challenge is combated by eliminating pitch control surfaces and replacing them with ...