Fleischmann, DominiqueWeber, SimoneLone, Mohammad M.2018-02-052018-02-052018-01-13Fleischmann D, Weber S, Lone MM, Fast computational aeroelastic analysis of helicopter rotor blades, Proceedings of 2018 AIAA Aerospace Sciences Meeting, 8-12 January 2018, Kissimmee, Florida, USA, Paper AIAA 2018-1044http://dx.doi.org/10.2514/6.2018-1044https://dspace.lib.cranfield.ac.uk/handle/1826/12958The use of a new aeroelastic computer framework called Flexit is described and the frame-work is used to analyse the dynamic aeroelastic behaviour of a four-bladed helicopter main rotor. Flexit implements a loose coupling between unsteady vortex lattice method (UVLM) and numerical solution of the inhomogeneous Euler-Bernoulli partial differential equation (PDE).The framework is fast because most of the intensive computational functionality is performed on GPU using NVIDIA CUDA technology, and this makes it suitable for use in the early de-sign stages. The UVLM algorithm uses a free wake model, and solution of the Euler-Bernoulli PDE is approximated using a finite difference algorithm that includes a term to take account of centrifugal forces. The results of simulations are compared with analysis performed with CFD and FSI tools.enAttribution-NonCommercial 4.0 InternationalConference paper