Study on longitudinal optimum location of transport aircraftnacelle and pylons

Abstract To resolve the problem of the interference between the wing/body/pylon/nacelle of the large transport aircraft, this paper uses the Euler equation with the Cartesian grid and finite volume method to calculate the flow characteristic of the aircraft with different amounts of protrusion and subsidence of the nacelle and pylon, also analyse and compare the aerodynamic performance. The optimized position is selected and demonstrated. The numerical result shows that the aerodynamic performance of the transportation aircraft is obviously improved for the new optimized position of the nacelle and pylon.