公开(公告)号：US09689400B2

公开(公告)日：2017-06-27

申请号：US14031644

申请日：2013-09-19

Applicant: ROLLS-ROYCE PLC

Inventor： Marko Bacic ,  Ronald William Daniel

IPC: F01D11/06 ,  F01D11/10 ,  F04D29/16 ,  F15C1/22 ,  F01D11/20

CPC classification number: F04D29/16 ,  F01D11/06 ,  F01D11/10 ,  F01D11/20 ,  F05D2270/62

Abstract: A fluidic actuator comprising: a fluid nozzle for delivering fluid and a tube having an open end and a closed end, the open end spaced from the fluid nozzle. Also a pair of electrodes mounted in the tube and spaced apart to create a spark gap therebetween. A voltage source is arranged to supply a voltage across the pair of electrodes wherein the voltage causes plasma formation in the spark gap thereby shortening the effective length of the tube.

公开(公告)号：US09719365B2

公开(公告)日：2017-08-01

申请号：US14031695

申请日：2013-09-19

Applicant: ROLLS-ROYCE PLC

Inventor： Marko Bacic ,  Timothy John Scanlon ,  Ronald William Daniel

IPC: F01D11/10 ,  F01D11/24 ,  F01D11/06 ,  F01D11/20

CPC classification number: F01D11/10 ,  F01D11/06 ,  F01D11/20 ,  F01D11/24 ,  F05D2260/16 ,  F05D2270/172 ,  F05D2270/62

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 energize the first and second plasma generators at an energizing frequency to deliver fluid to the passage at a frequency coincident with the passing frequency of the component.