Multi-Scale Aerodynamic modelling of Helicopters/UAV in Urban Environments

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An important source of innovation in the field of aeronautics involves the flight of UAVs or rotorcraftwith/without passengers. Unlike aircraft that fly in dedicated environments (airports or airspace 10 km above the ground), these vehicles operate close to objects such as drilling platforms or buildings, or even inside cities. In order to meet performance and certification criteria corresponding to competitive and safety issues respectively, it is necessary to model the flight of aircraft in such environments. A major constraint is that the modelling time must be small, i.e. capable of being integrated into industrial flight simulation processes at low cost, while possessing acceptable accuracy.This project aims firstly to couple existing multi-scale models of aircraft aerodynamic simulations including rotors, city models and atmospheric conditions to improve flight simulators. Secondly, in order to meet the low-cost criteria, this project introduces artificial intelligence models as a 'surrogate model' for both small-scale (aerodynamics) and large-scale (cities) software.These new approaches will allow industry and certification agencies access to physics-based models toaccurately and realistically simulate the flight of rotorcraft in an urban context. In addition, advances inartificial intelligence will allow the development of a new field of expertise in Quebec, namely artificialintelligence applied to computational fluid dynamics (AI-CFD). Indeed, the disturbances introduced byatmospheric conditions and cities are important parameters affecting the aerodynamics of aircraft. It follows that the development of the Quebec aeronautical industry for the flight of aircraft in urban environments requires such tools, which are necessary both from a competitive and a safety point of view.