Adjustment control to angular setting of vanes at a high speed compressor, in an aero engine gas turbine, sets the position according to the aerodynamic and mechanical rotary speeds

摘要

To control the angular setting of vanes on a vertical axis (11), and especially at the high pressure compressor of an aero engine gas turbine, it is set according to the aerodynamic rotary speed of the compressor on a horizontal axis (10) according to an initial adjustment rule (12). The adjustment angle is also determined by a second adjustment rule (13) according to the mechanical rotary speed of the compressor, if the mechanical rotary speed has reached a given proportion (14) of the maximum permitted mechanical rotary speed. The second adjustment rule generates a larger opening angle than the first rule.