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Flexible body assemblies exhibit an additional source of variation, such as the deformation of the components due to assembly forces or temperature loading during manufacturing.Flexible assemblies, composed of slender parts or sheet metal components can deform substantially from their nominal geometric shape.First of all, contributions of input parameters to each output (aerodynamic forces and moments) and the correlation between the inputs are identified.Then, separate Response Surface Model for each output that span the whole design space is generated to investigate the design deeper.By using CFD tools, a comparison for bare fuselage and FES device installed is done.For the current study two speeds are investigated: 120 km/h (near at the maximum efficiency) and 180 km/h (usual cross country straight speed), with the cabin ventilation closed.
The case study, developed through a close cooperation between Magnaghi Aeronautica and Engin Soft, allowed to evaluate positively the capacities of the software mode FRONTIER.
Therefore, determination and mitigation of the risk they can represent to people in the event of a ground impact is a key point for the development of UAV regulations in the civil airspace.
The present work, conceived and promoted within the Apulian Aerospace Technological Cluster (DTA) and developed into the co-funded project “TAKE-OFF - Test and Knowledge‐based Environment for Operations, Flight and Facility” (in the “Cluster Tecnologici Regionali - Smart Puglia 2020, Regione Puglia” frame program) introduces a path planning methodology where the risk related to UAV operation is reduced by estimating the probability of hitting a person on the ground, assuming a map of the population density in the area interested by the flight is available.
The framework enables the application of robust design at system level and fast cross-functional trade studies on novel engine architectures.
The paper demonstrates a more efficient integration of structural and thermal analysis simulation capabilities.
Once the relation between the nominal vehicle trajectory and corresponding risk level is defined, a suitable multi-objective optimization process is developed, searching for the optimum solutions that minimize path length and risk, the latter being constrained below a prescribed maximum admissible value.