Tip treatment bars in a gas turbine engine
AssigneeROLLS-ROYCE plc
InventorPeter Allford
Life of this patent
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Abstract
There is presented a casing arrangement for a gas turbine engine. The casing arrangement includes a plurality of tip treatment bars extending between a pair of spaced-apart annular supports, with each tip treatment bar being elongate and supported at each end by a respective support such that each end of the bar is received within an opening formed in the respective support. At least the ends of each tip treatment bar are tapered in transverse cross-section so as to have a wedge-shaped profile, and the openings in the supports have a complementary tapered shape for receipt and retention of the bar ends therein.
Claims12
A casing arrangement for a gas turbine engine, the casing arrangement including a plurality of tip treatment bars extending between a pair of spaced-apart annular supports, each tip treatment bar being elongate with axial extents defined by opposing end surfaces, and supported at each end by a respective said support such that each end of the bar is received within an opening formed in the respective support, wherein:
- each tip treatment bar has a tapered, uniform transverse cross-section along its entire length so as to have a wedge-shaped profile, and said openings in the supports have a complementary tapered shape for receipt and retention of the bar ends therein;
- and
- at least one of said supports includes a stop surface adjacent each of its openings that is configured to prevent the end surfaces of the tip treatment bars from extending axially past the openings of the supports thereby ensuring accurate axial alignment of the tip treatment bars relative to said supports.
Dependencies are inferred from the claim text.