Blade track assembly with turbine tip clearance control

摘要

A turbine shroud assembly or blade track assembly adapted to extend around a turbine wheel assembly is disclosed. The turbine shroud assembly includes a carrier and a blade track coupled to the carrier. The blade track is movable between a radially-inward position having a first inner diameter and a radially-outward position having a second inner diameter larger than the first inner diameter.

主权项

1. A turbine shroud assembly for a gas turbine engine, the turbine shroud assembly comprising
a carrier configured to change size in response to a change in temperature, the carrier arranged around an engine axis to form a ring, the carrier formed to include a plurality of guide slots extending perpendicular to the engine axis, a blade track concentric with the carrier made of a plurality of segments, the blade track movable between a radially-inward position having a first inner diameter and a radially-outward position having a second inner diameter larger than the first inner diameter, and a plurality of guide pins positioned in the guide slots for movement therein relative to the carrier, attached to the segments of the blade track for movement with the blade track relative to the carrier, and configured to couple the carrier to the blade track, wherein the guide pins are movable within the guide slots so that the segments of the blade track each move substantially inwardly and outwardly in a radial direction relative to the engine axis as the blade track moves between the radially-inward position and the radially-outward position in response to movement of the guide pins within the guide slots.