Patent ID: 9587507
Date: 2017-03-07
CPC Classifications: F01D,F04D

Claim:
1. An apparatus comprising: a gas turbine engine bladed turbomachinery component centered on a first axis and operable to rotate about said first axis, said bladed turbomachinery component including an inner base and a plurality of blades extending radially outward from said inner base and also extending along said first axis, wherein a plurality of fluid channels are respectively defined between adjacent pairs of said plurality of blades; a flow path forming component encircling said bladed turbomachinery component and substantially enclosing a radially outward side of said blades along said first axis; a pivoting member circumferentially extending about said first axis and adjacent to at least part of said flow path forming component along said first axis; an actuator operably engaged with said pivoting member to pivot said pivoting member about said first axis; at least one cam engaged with said pivoting member; and at least one cam follower engaged with said flow path forming component, wherein pivoting movement of said pivoting member about said first axis results in said at least one cam urging said at least one cam follower and said flow path forming component along said first axis to vary a distance between said plurality of blades and said flow path forming component.