Rotor arrangement
AssigneeROLLS-ROYCE plc
InventorsChristopher Freeman, Ivor J Day
Life of this patent
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Abstract
With highly loaded rotors and stators problems can occur with secondary flows sweeping low momentum fluid across the blades reducing efficiency. By provision of collector slots to collect the secondary air and direct that air to a return slot in a rotor hub it is possible to provide impetus to the collected secondary flow to an outlet slot such that there is dispersal of the secondary flow and therefore reduce the effects upon the overall performance of a gas turbine engine incorporating the arrangement.
Claims14
A rotor arrangement for a gas turbine engine, the arrangement comprising a rotor hub and a stator shroud arranged to sweep past each other in use, the stator shroud including a collector slot to collect secondary flow and direct the collected secondary flow to a return slot in the rotor hub, the return slot shaped to provide in use impulse to the collected secondary flow to project the collected secondary flow to an outlet slot in the stator shroud, the collector slot and the outlet slot respectively angled relative to the return slot to facilitate coupling as the rotor hub sweeps past the stator shroud in use.
Dependencies are inferred from the claim text.