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Multidisciplinary Simulation of the Maneuvering of an Aircraft

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A computational methodology for the simulation of the transient aeroelastic response of an unrestrained and flexible aircraft during high-G maneuvers is presented. The key components of this methodology are: (a) a three-field formulation for coupled fluid/structure interaction problems; (b) a second-order time-accurate and geometrically conservative flow solver for CFD computations on unstructured dynamic meshes; (c) a corotational finite element method for the solution of geometrically nonlinear and unrestrained structural dynamics problems; (d) a robust method for updating an unrestrained and unstructured moving fluid mesh; and (e) a second-order time-accurate staggered algorithm for time-integrating the coupled fluid/structure semi-discrete equations of motion. This computational methodology is illustrated with the simulation on a parallel processor of several three-dimensional high-G pullup maneuvers of the Langley Fighter in the transonic regime, using a detailed finite element aeroelastic model.

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Farhat, C., Pierson, K. & Degand, C. Multidisciplinary Simulation of the Maneuvering of an Aircraft. EWC 17, 16–27 (2001). https://doi.org/10.1007/PL00007193

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  • DOI: https://doi.org/10.1007/PL00007193

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