High response turbine tip clearance control system
AssigneeUnited Technologies Corporation
InventorsEric A. Hudson, Stephen K. Kramer
Life of this patent
Estimating the term…
Abstract
An actuation system according to various embodiments can include an actuation ring having a first end and a second end separated by a gap, the actuation ring being configured to be coupled to a blade outer air seal (BOAS). The actuation system can also include an actuator coupled to at least one of the first end or the second end and configured to adjust a size of the gap such that a tip clearance between the BOAS and a blade tip is reduced in response to the size of the gap being reduced.
Claims18
An actuation system for tip clearance control comprising:
- an actuation ring having a first end and a second end separated by a gap, the actuation ring being configured to be coupled to a blade outer air seal (BOAS), the actuation ring including at least one radial guide configured to be received by a radial guide acceptor of at least one of a forward BOAS support or an aft BOAS support;
- and
- an actuator coupled to at least one of the first end or the second end and configured to adjust a size of the gap such that a tip clearance between the BOAS and a blade tip is reduced in response to the size of the gap being reduced.
A turbine section of a gas turbine engine, comprising:
- a turbine blade having a blade tip;
- a blade outer air seal (BOAS);
- and
- an actuation system comprising:
- an actuation ring having a first end and a second end separated by a gap, the actuation ring being configured to be coupled to the BOAS, the actuation ring including at least one radial guide configured to be received by a radial guide acceptor of at least one of a forward BOAS support or an aft BOAS support, and
- an actuator coupled to at least one of the first end or the second end and configured to adjust a size of the gap such that a tip clearance between the BOAS and the blade tip is reduced in response to the size of the gap being reduced.
An actuation system for tip clearance control comprising:
- an actuation ring having at least two sections each separated by a gap and being configured to be coupled to a blade outer air seal (BOAS), the actuation ring including at least one radial guide configured to be received by a radial guide acceptor of at least one of a forward BOAS support or an aft BOAS support;
- and
- at least two actuators, each being configured to be coupled to at least one end of adjacent sections of the at least two sections and to adjust the gap between the adjacent sections such that a tip clearance between the BOAS and a blade tip is reduced in response to a size of each gap being reduced.
Dependencies are inferred from the claim text.