ASYMMETRIC FLOW EXTRACTION SYSTEM

摘要

A system for asymmetric flow extraction is described and claimed, the system comprising a flow path 17, a bleed slot 219 in the flow path 17, a bleed cavity 200 for receiving at least a portion of the fluid extracted from the flow pa th 17 and a bleed passage 100 in flow communication with the bleed slot 219 and the blee d cavity 200 wherein the bleed passage 100 has at least one deflector 151 having a shape such that the width of the bleed passage cross section varies in a direction norm al to the direction of fluid flow in the bleed passage 100. In another embodiment, the deflector 151 has an aerodynamic surface 175 having a shape such that the flow passage between the aerodynamic surface 175 and a surface 505 located away from it h as a cross sectional shape that is non-axisymmetric. In another embodiment, the bleed passage 100 comprises an assembly of a plurality deflectors 151, arranged circumferentially.