Effects of engine placement on the nonlinear aeroelastic gust response of a very flexible high-aspect-ratio wing is investigated using the computer program NATASHA (Nonlinear Aeroelastic Trim And Stability of High-Altitude, Long-Endurance Aircraft). The simulation benefits from the finite-state, induced-flow model of Peters and the nonlinear composite beam theory of Hodges, which accommodates large deformation and avoids singularities due to finite rotation. Results for engine placement along the span with offsets from elastic axis show that engine placement significantly affects gust response of the wing and can be used to relieve gust load.
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