Rotary kinetic fluid motors or pumps – With shaft connected fluid force subjected thrust balancing...
Patent
1997-10-21
1998-11-17
Kwon, John T.
Rotary kinetic fluid motors or pumps
With shaft connected fluid force subjected thrust balancing...
415107, F01D 304
Patent
active
058367390
ABSTRACT:
A gas turbine engine comprises turbine and compressor elements on a rotary shaft. The shaft is rotably mounted on preloaded axial thrust bearings. As it rotates in use the turbine and compressor elements create an axial thrust load on the bearings. According to the invention that axial thrust load is opposed by an electromagnetic coil which is energised to exert an axial force on the shaft in opposition to the axial thrust load and preferably completely balancing the axial thrust load. Bearing life is much extended.
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Birch Peter H.
Haramura Shigenori
Norton Mark G.
Raine Michael J.
Reynolds Graham A.
Kwon John T.
Rolls-Royce plc
Taltavull W. Warren
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