Patent ID: 7134843
Filing Date: 2006-11-14
Classification: F01D

Abstract:
1. A turbine wheel for a turbomachine comprising: a turbine disk and several blade segments installed on the turbine disk, each blade segment comprising a root and at least one blade fixed to the root, the turbine disk comprising an upstream rib and a downstream rib each extending approximately in the annular direction around a longitudinal principal axis of the wheel and radially as far as a radial end of the disk, each blade segment installed on the turbine disk configured to be retained by the turbine disk in an external radial direction using upstream engagement means forming part of the root and configured to cooperate with complementary upstream engagement means forming an external radial end of the upstream rib, and downstream engagement means also forming part of the root and configured to cooperate with complementary downstream engagement means forming an external radial end of the downstream rib, the upstream rib and downstream rib of the turbine disk being configured to be moved from a separated engagement position to a close position, and vice versa, so that each blade segment is configured to be assembled on the turbine disks, wherein at least one of the upstream rib and the downstream rib is elastic such that the at least one rib is configured to be moved from the separated position to the close position and from the close position to the separated position by respectively applying a pressure on the at least one rib, and releasing the applied pressure.