An over-the-wing-nacelle-mount airplane configuration is known to prevent the noise propagation from jet engines toward\r\nground. However, the configuration is assumed to have low aerodynamic efficiency due to the aerodynamic interference effect\r\nbetween a wing and a nacelle. In this paper, aerodynamic design optimization is conducted to improve aerodynamic efficiency\r\nto be equivalent to conventional under-the-wing-nacelle-mount configuration. The nacelle and wing geometry are modified to\r\nachieve high lift-to-drag ratio, and the optimal geometry is compared with a conventional configuration. Pylon shape is also\r\nmodified to reduce aerodynamic interference effect. The final wing-fuselage-nacelle model is compared with the DLR F6 model to\r\ndiscuss the potential of Over-the-Wing-Nacelle-Mount geometry for an environmental-friendly future aircraft.
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