| 主权项 |
1. A disc and blade arrangement for a gas turbine engine,
the disc and blade arrangement comprising: a disc having a groove provided on the periphery of the disc; and a blade mounted to the disc, the blade having a root that is received in the groove of the disc and retained therein, wherein the blade root includes a planar surface and a curved surface is positioned adjacent the planar surface of the blade root, and the disc groove includes a planar surface and a curved surface is positioned adjacent the planar surface of the groove, and wherein the blade is moveable between a first position and a second position, in the first position the planar surface of the disc contacts the planar surface of the groove and a gap is provided between the curved surface of the groove, and in the second position a gap is provided between the planar surface of the groove and the planar surface of the blade root. |
