Patent ID: 11867068
Assignee: GENERAL ELECTRIC COMPANY
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  H | IPC F  H

Claim 14:
15. An apparatus to control clearance for a turbine or a compressor engine, the apparatus comprising:
a case surrounding at least part of the turbine or the compressor engine, the at least part of the turbine or the compressor engine including a shroud and a hanger to contain airflow in the turbine or the compressor engine, the case including a first pin and a second pin, the hanger coupled to the shroud, and wherein the hanger includes a first slot and a second slot, the first pin coupled to the first slot and the second pin coupled to the second slot; and
an actuator to control clearance between an airfoil and the shroud, the actuator including a first multilayer stack of material and a second multilayer stack of material, and wherein the actuator is inside the hanger between the first slot and the second slot, the actuator to move the hanger and the shroud in a circumferential direction.