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US 2019/0093512 A1Published application
Ceramic matrix composite blade track for a gas turbine engine
AssigneesROLLS-ROYCE plc, Rolls-Royce North American Technologies Inc.
InventorsAaron D. Sippel, Bruce E. Varney, Ted J. Freeman, Kevin P. Holley
Life of this patent
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Abstract
A gas turbine engine may comprise a blade track and a method of making the same. The blade track may be constructed of ceramic matrix composite components including segments and joints.
Claims20
A blade track for use in a gas turbine engine, the blade track comprising
- a first segment comprising ceramic-matrix composite materials, the first segment including a first band shaped to extend part-way around a central axis, a first finger support that extends partway around the central axis from a circumferential end of the first band, and a first attachment finger that extends from an end of the first finger support, and
- a second segment comprising ceramic-matrix composite materials, the second segment including a band shaped to extend part-way around the central axis a finger support that extends partway around the central axis from a circumferential end of the band, and a second attachment finger that extends from an end of the finger support,
- wherein the first attachment finger extends from the first finger support in an axial direction and the second attachment finger extends from the second finger support in an axial direction opposite the first attachment finger.
A method of making a blade track for a gas turbine engine, the method comprising:
- providing a first blade track segment having a band, a finger support and a finger and a second blade track segment having a band, a finger support and a finger,
- chemical vapor infiltrating the first blade track segment and the second blade track segment to partially densify the first blade track segment and the second blade track segment,
- assembling the blade track by inserting the first finger formed on the first blade track segment into a first finger-receiving space formed in the second blade track segment and inserting the second finger formed on the second blade track segment into a second finger-receiving space formed in the first blade track segment to interlock the first blade track segment and the second blade track segment, and
- slurry melt infiltrating the first blade track segment and the second blade track segment to bond the first blade track segment and the second blade track segment.
1 more element
Dependencies are inferred from the claim text.