Patent ID: 7828514

Claim:
A rotor for an engine comprising: at least two rotor disks connected to one another by an axially extending connecting element, the axially extending connecting element being located at a radius Ra 1 and having at least one inlet aperture for entry of fluid from an area surrounding the rotor, a shaft located in a bore hole of the rotor disks, the shaft and the rotor disks forming a gap at a radius Ri; at least one blade attached at a blade root to one of the rotor disks at a radius greater than the radius Ra 1 ; and at least one axially extending interrupting element having at least one radially extending fluid passage being situated at a radius Ra 2 ; the connecting element, the at least two rotor disks and the interrupting element defining a first chamber, and the interrupting element, the at least two rotor disks and the shaft defining a second chamber radially adjacent the first chamber, fluid flowing into the first chamber through the at least one inlet aperture and exiting solely through the at least one radially extending fluid passage.