PLASMA BLADE TIP CLEARANCE CONTROL

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 m...

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Bibliographische Detailangaben
Hauptverfasser:	WADIA, ASPI RUSTOM, LEE, CHING-PANG, CHERRY, DAVID GLENN, CARSON, SCOTT MICHAEL
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION ENGINE PLANTS IN GENERAL GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04 LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS
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Beschreibung
Zusammenfassung:	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).