초록 ▼

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 i

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.

대표청구항 ▼

[ We claim:] [1.] A gas turbine engine comprising turbine and compressor elements on a rotary shaft that is rotatably mounted in a stator body by bearings of the rotary type, in which there are provided electromagnetic means for opposing axial thrust loads on the shaft in use, comprising an electrom

[ We claim:] [1.] A gas turbine engine comprising turbine and compressor elements on a rotary shaft that is rotatably mounted in a stator body by bearings of the rotary type, in which there are provided electromagnetic means for opposing axial thrust loads on the shaft in use, comprising an electromagnetic coil supported in the stator body and surrounding the shaft, and means for energizing the electromagnetic coil in use to exert an electromagnetic axial force on the shaft to oppose axial thrust loads on the shaft resulting from rotation of the turbine and compressor elements, said shaft being rotatable mounted in said stator body by pre-loaded axial thrust bearings.