- Balancing propeller optimisation between cruise and hover conditions is a key challenge in eco-friendly aircraft design. This paper presents a novel multidisciplinary propeller optimisation approach, integrating blade element momentum theory and acoustic models. Three propeller design strategies are systematically evaluated in multidisciplinary propeller optimisation, considering aerodynamic efficiency and noise emissions. The design strategies and the optimisation scheme are assessed within the paper. A serial optimisation scheme improves the overall optimisation result and reduces the optimisation time significantly. In the serial approach, the design space is reduced stepwise. In the initial step, linear chord and parabolic twist distributions are sufficient for defining global propeller parameters like blade number and diameter. In contrast, detailed blade shape optimisation requires a parametric blade description. The findings are utilized to develop a novel optimisation scheme, reducing computational effort and enabling innovative air mobility solutions to be designed.
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