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 having a flow path wall disposed around an airfoil shaped component; a thermoelectric tip clearance module disposed in thermal communication with the flow path wall having a thermoelectric core operable to provide one of thermal growth and thermal shrinkage to the flow path wall; and a controller structured to regulate the thermoelectric core of the thermoelectric tip clearance module to change a size of the flow path wall relative to the airfoil shaped component.