ENGINE DUCT AND AIRCRAFT ENGINE

摘要

A projecting part 33 is formed on an inner circumferential wall surface 9p of a nacelle 9 so that the projecting part 33 projects inward in a diametral direction and extends from a front edge 17a of each of circumferentially-oriented side faces 17f and 17s of a bottom pylon 17. The shape of the projecting part 33 seen from an inner side of the diametral direction is a streamline shape extending in parallel with an engine shaft direction. An apex part 33h at the center of the projecting part 33 is positioned on a rear edge 17t of the bottom pylon 17.