Patent ID: 6094907
Filing Date: 2000-08-01
Classification: B64D,F02C,F02K

Abstract:
A jet engine comprising:a. a nacelle having a forward end, and a rearward end, and which is located in an airstream such that a free airstream flow which is in contact with the nacelle creates a boundary layer at the outer surface of the nacelle;b. an engine, having a fan portion and a core portion, located inside the nacelle and discharging air at an outlet in a manner to generate noise;c. a suction surface having a plurality of openings and located in the outer surface of the nacelle at a location near the rearward end of the nacelle such that the openings are in communication with the boundary layer; andd. means, in communication with the openings, for reducing the pressure at the openings so that the boundary layer located rearward of the openings is smaller than the boundary layer located forward of the openings thereby reducing the noise from the discharged air.