Rolls-royce Corporation

Steven Robert Wellborn

Bronwyn Power

Mark Stephen Henry

Liping Xu

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.

Compressor blade

A lubrication system is provided for use with a bearing including an outer race, an inner race, and bearing elements disposed therebetween. Rotation of the bearing and a shaft journaled thereby induces air movement having a first air velocity and a path adjacent the bearing. The lubrication system includes a structure providing a passageway through which a lubricant entrained in gas is delivered at a second velocity to the bearing. The lubrication system further includes a flow modifier disposed relative to the bearing and the structure to modify the first air velocity to promote movement of the lubricant into the bearing.

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Indianapolis, IN, United States of America

Steven Robert Wellborn