Ring cowl e.g. primary cowl, for e.g. separated air flow pipe of aircraft`s turbomachine, has crests and portion inclined inside cowl, where portion having curvature radius larger than that of crests is moved outside with respect to crests

摘要

The cowl e.g. primary cowl (14), has patterns (26) each comprising a triangular contour with crests (30, 31) connected to a base (28) by respective lugs (32). The crests are connected with each other by a curved portion (34) having a curvature radius (R1) larger than curvature radii (r1, r2) of curved contours of the crests. The lugs are connected to a trailing edge (14a) along a curved contour with a curvature radius (R2) larger than the radius (R1). The crests and the portion are radially inclined inside the cowl, where the portion is radially moved outside with respect to the crests.