Patent ID: 7299635
Filing Date: 2007-11-27
Classification: F02K,F05D,Y02T

Abstract:
1. A mixing tube for enclosing and guiding a hot core stream of a jet engine, said mixing tube having a lateral wall with a laterally outward facing surface over which a cold bypass flow flows and a laterally inward facing surface over which the hot core stream flows; wherein said mixing tube is configured as a truncated cone which narrows in a direction of flow through the mixing tube; wherein mixing openings extend laterally through said lateral wall of the mixing tube at its downstream end to accommodate flow therethrough of portions of the hot core stream which then penetrates into the cold bypass flow along the outward facing surface; wherein the openings have a passage area of elliptical shape with a major axis and a minor axis; and wherein the major axis of the passage area runs on the lateral wall of the mixing tube in the direction of flow and the minor axis of the passage area runs perpendicularly thereto.