Compressor blade
AssigneeROLLS-ROYCE plc
InventorsBronwyn Power, Liping Xu, Steven R Wellborn
Life of this patent
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Abstract
A blade for a compressor having a pressure surface and a suction surface. The suction surface includes a discontinuity in the chord-wise curvature of an intermediate portion of the suction surface between the blade leading edge and blade trailing edge, and a slot arranged along at least a portion of the blade in a substantially span-wise direction. The slot being disposed at or near the change in curvature, such that when in use lower momentum fluid near the suction surface is aspirated into the slot.
Claims16
A blade for a compressor comprising a pressure surface and a suction surface, wherein the suction surface comprises:
- a discontinuity in the chord-wise curvature of an intermediate portion of the suction surface between the blade leading edge and blade trailing edge;
- and
- a slot arranged along at least a portion of the blade in a substantially span-wise direction, the slot being disposed at or near the discontinuity in the curvature, such that when in use, lower momentum fluid near the suction surface is aspirated into the slot, wherein the discontinuity is either on the suction surface or on an imaginary continuation of the suction surface between an opening of the slot and a closing of the slot, such that the discontinuity is independent of the slot geometry.
Dependencies are inferred from the claim text.