Clearance control
AssigneeROLLS-ROYCE plc
InventorsMarko BACIC, Timothy John SCANLON, Ronald William DANIEL
Life of this patent
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Abstract
A clearance control device including a segment having a passage to deliver fluid towards a component rotating past the segment. Also a fluid flow device having a first fluid path coupled to the passage and a second fluid path that is decoupled from the passage. A first plasma generator is located in the fluid flow device that directs fluid towards the first fluid path; a second plasma generator is located in the fluid flow device that directs fluid towards the second fluid path; and a control arrangement is configured to alternately energise the first and second plasma generators at an energising frequency to deliver fluid to the passage at a frequency coincident with the passing frequency of the component.
Claims20
A clearance control device comprising:
- a segment having a passage to deliver fluid towards a component rotating past the segment;
- a fluid flow device having a first fluid path coupled to the passage and a second fluid path that is decoupled from the passage;
- a first plasma generator located in the fluid flow device that directs fluid towards the first fluid path;
- a second plasma generator located in the fluid flow device that directs fluid towards the second fluid path;
- and
- a control arrangement configured to alternately energise the first and second plasma generators at an energising frequency, to deliver fluid to the passage at a frequency coincident with the passing frequency of the component.
Dependencies are inferred from the claim text.