Variable vane for gas turbine engine

摘要

A turbomachine includes a variably positioned vane, an outer spindle integral with a vane outer button, where the vane is coupled to the vane outer button, an annular sleeve defining the spindle, where the annular sleeve contacts the vane outer button at a radially inward extent and contacts a turbine casing at a radially outward extent. The annular sleeve includes a wall portion having an aperture and the spindle extends through the aperture. A nut engages spindle threads, where the nut applies force to the wall portion toward the radially inward extent. An end of the spindle extends through the turbine casing, and a cantilever rotation actuator is coupled to the end of the spindle. A first bearing and second bearing engage the annular sleeve. A vane inner button is coupled to the vane, and a third bearing engages the vane inner button.

主权项

1. A turbomachine, comprising:
a variably positioned vane; a spindle integral with a vane outer button, wherein the vane is coupled to the vane outer button; an annular sleeve defining the spindle, wherein the annular sleeve contacts the vane outer button at a radially inward extent and contacts a turbine casing at a radially outward extent, wherein the annular sleeve comprises a wall portion positioned perpendicular to the spindle, the wall portion including an aperture and the spindle extending from the vane outer button to and through the aperture, and wherein the spindle includes threads; a nut engaged with the threads, the nut applying force to the wall portion toward the radially inward extent; wherein a radially outward end of the spindle extends though the turbine casing, and wherein a cantilever rotation actuator is coupled to the radially outward end of the spindle; a first rolling element engaging the annular sleeve substantially near the radially outward extent, wherein the first rolling element is coupled to the turbine casing; and a second rolling element engaging the annular sleeve substantially near the radially inward extent, wherein the second rolling element is coupled to an outer endwall ring.