Plasma blade tip clearance control

Details Plasma blade tip clearance control Plasma blade tip clearance control

F - Mech Eng,Light,Heat,Weapons

01

D

F01D 11/08 (2006.01) F01D 11/10 (2006.01) F01D 11/24 (2006.01)

Patent

CA 2605521

A gas turbine engine plasma blade tip clearance control system (11) includes an annular shroud (72) surrounding rotatable blade tips (82) and an annular plasma generator (2) spaced radially outwardly and apart from the blade tips (82). An exemplary embodiment of the annular plasma generator (2) is mounted to the annular shroud (72) and includes radially inner and outer electrodes (3, 4) separated by a dielectric material (5) disposed within an annular groove (6) in a radially inwardly facing surface (7) of the annular shroud (72). The plasma generator (2) is operable for producing an annular plasma between the annular shroud (72) and blade tips (82) and an effective clearance (ECL) produced by the annular plasma between the annular shroud (72) and blade tips (82) that is smaller than a clearance (CL) between the annular shroud (72) and blade tips (82).

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