COOLED FINGER SEAL

摘要

An air seal for a gas turbine engine platform comprises a flow path platform, a seal retention ring, a finger seal. The seal retention ring is situated radially adjacent the flow path platform. The finger seal is retained by the seal retention ring between the flow path platform and the seal retention ring. The finger seal comprises a first ply with first keyhole slots, a second ply with second keyhole slots circumferentially offset relative to the first keyhole slots, and a foil layer. The foil layer is disposed between the first and second plies. The finger seal has a series of cooling holes in the outer circumferential segment to cool the outer diameter of the seal. In addition, leakage between the finger seal and the flow path platform cools the inner diameter of the seal.

主权项

1. An air seal for a gas turbine engine platform, the air seal comprising:
a flow path platform; a seal retention ring situated radially adjacent the flow path platform; a finger seal retained by the seal retention ring between the flow path platform and the seal retention ring, the finger seal comprising:
a first ply with first keyhole slots;a second ply with second keyhole slots circumferentially offset relative to the first keyhole slots;a foil layer disposed between the first and second plies.