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A compression system endwall bleed system having a plurality of bleed slots formed in a mechanical housing downstream of a rotating shrouded rotor. In one embodiment, the plurality of bleed slots bleed off a separated tip boundary layer to relieve back pressure associated with this blockage. A seali

A compression system endwall bleed system having a plurality of bleed slots formed in a mechanical housing downstream of a rotating shrouded rotor. In one embodiment, the plurality of bleed slots bleed off a separated tip boundary layer to relieve back pressure associated with this blockage. A sealing structure downstream of the shrouded rotor is utilized to minimize working fluid leakage ahead of the plurality of bleed slots.

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1. A compression system, comprising:a mechanical housing; a wheel rotatable within said housing, said wheel having a plurality of blades coupled thereto; a shroud coupled to said plurality of blades so as to separate fluid flow within the compression system into a core stream and a bypass stream, sa

1. A compression system, comprising:a mechanical housing; a wheel rotatable within said housing, said wheel having a plurality of blades coupled thereto; a shroud coupled to said plurality of blades so as to separate fluid flow within the compression system into a core stream and a bypass stream, said shroud having a fore edge and an aft edge; a static wall member coupled to said mechanical housing and having a portion aligned with said aft edge of said shroud; and at least one bleed aperture formed in said wall member adjacent the aft edge of the shroud to allow the passage of fluid into the bypass system.