Computational design of S-Duct intakes for distributed propulsion

Purpose – The purpose of this paper is to identify efficient methods and tools for the design of distributed propulsion architectures. Design/methodology/approach – Multi-objective computational aerodynamic design optimisation of an S-Duct shape. Findings – Both duct pressure loss and flow distortion through such a duct can be reduced by wall-curvature changes. Research limitations/implications – Initial simplified study requires higher fidelity computational fluid dynamics & design sensitivity follow-up. Practical implications – Shape optimisation of an S-Duct intake can improve intake efficiency and reduce the risk of engine-intake compatibility problems. Social implications – Potential to advance lower emissions impact from distributed propulsion aircraft. Originality/value – Both the duct loss and flow distortion can be simultaneously reduced by significant amounts.