Aircraft Aeroservoelastic Modelling of the FLEXOP Unmanned Flying Demonstrator

This paper presents the aeroservoelastic modelling toolchain established for the aircraft design exercise within the European research project, FLEXOP. The FLEXOP project aims to develop and apply active flutter suppression and load alleviation techniques on an unmanned flying demonstrator. The developed methods are then to be applied in the design of a commercial-scale wing derivative in a scale-up task. A high-fidelity finite element (FE) structural model is the first block in the modelling process. A condensed FE model together with aerodynamic models based on the doublet-lattice (DLM) and vortex-lattice (VLM) methods represent the aeroelastic system. The aerodynamics represented by the afore-mentioned panel methods is complemented by results from higher-fidelity computational fluid dynamics (CFD) simulations. Reduced-order aeroservoelastic models suitable for control-synthesis are then generated using a “bottom-up” modelling approach. The aim of the paper is to present an overview of the different models encountered during such a design process and their domains of application. � 2019 by German Aerospace Center (DLR). Published by the American Institute of Aeronautics and Astronautics, Inc.     «

This paper presents the aeroservoelastic modelling toolchain established for the aircraft design exercise within the European research project, FLEXOP. The FLEXOP project aims to develop and apply active flutter suppression and load alleviation techniques on an unmanned flying demonstrator. The developed methods are then to be applied in the design of a commercial-scale wing derivative in a scale-up task. A high-fidelity finite element (FE) structural model is the first block in the modelling pr...     »