| 摘要 |
A turbomachine (eg., gas turbine) rotor 310 comprises blade land 312, the rotor comprising an annular flange / diaphragm / web 318 extending from proximate the blade land to a free inner radius 320, the flange / web being asymmetrical about a plane perpendicular to the axis X of rotation. The flange 318 is preferably of constant axial thickness in the radial direction R. The flange, which defines a frustum, is preferably angled in the direction of flow (direction X), but in other cases the flange may be directed upstream. The rotor disc with the asymmetrical flange / web / diaphragm is ideally used in vertically upstanding gas turbine engines to prevent the accumulation of water and oil on the rotor, the flange also serving to strengthen the rotor and ensure that hoop stresses do not damage it. The rotor disc may be used as a compressor or fan or turbine disc. |
