High Fidelity Full Aircraft Simulations for the Application in an industrialized Ditching Analysis Process

Kurzfassung

Over the last years a process chain for the generation of ditching models based on numerical methods for transient dynamic calculations has been developed at the German Aerospace Center. With the integration of automated tool capabilities for mesh-refinement and to extrude cross-sections flexible detailed FE aircraft representations are generated using the structural modelling framework PANDORA. The detailed area of the aircraft model is relevant to sufficiently describe structural deformations. In combination with fluid domains discretized by a set of particles using the SPH formulation representative ditching models are generated and calculated. The SPH-FE approach for ditching models was previously investigated and validated in the scope of a European ditching project using flexible panels in experimental test campaigns. This work focuses on high-fidelity ditching simulations including aircraft models with different mesh densities and representative pools with adapted particle distributions. Ditching simulations are analyzed in terms of result quality, performance, model handling and data transfer. Results are intended to contribute to semi analytical methods in an industrial driven environment.