Patent ID: 7966824

Claim:
An aircraft system, comprising: a jet engine exhaust nozzle having an internal flow surface positioned outwardly from a core flow path, the nozzle having an exit aperture, the exit aperture having a perimeter, the perimeter including multiple projections that are (a) non-moveable relative to the core flow path or (b) movable relative to the perimeter, the projections extending in an aft direction and circumferentially spaced about the perimeter with a length of the multiple projections in a first group decreasing successively over at least three projections from one projection to the next along a first portion of the perimeter, and a length of projections in a second group decreasing successively over at least three projections from one projection to the next along a second portion of the perimeter, the second portion being mirrored relative to the first portion about an axially extending plane.