GAS TURBINE ENGINE TIP CLEARANCE CONTROL

摘要

A gas turbine engine is disclosed having a thermoelectric device capable of changing a tip clearance in a turbomachinery component. In one non-limiting form the turbomachinery component is a compressor. The thermoelectric device can be used in some forms to harvest power derived from a waste heat. The tip clearance control system can include a sensor used to determine a clearance between a tip and a wall of the turbomachinery component.

主权项

1. An apparatus comprising:
a gas turbine engine flow path wall forming a boundary for the flow of a working fluid through a turbomachinery component having an airfoil shaped component during operation of a gas turbine engine; a thermoelectric device in thermal communication with the gas turbine engine flow path wall; and a control module structured to regulate the thermoelectric device to influence a thermally induced gap between the gas turbine engine flow path wall and the airfoil shaped component.