| 摘要 |
The fan comprises a fan disk able to be rotationally driven about a longitudinal axis and provided at the periphery with radial blades each comprising a root slideably engaged in a groove of the disk and, on the outside thereof, a vane, platforms surrounding the disk being interposed between the radial blades. Advantageously, the fan additionally comprises shock-absorbing wedges which are arranged tangentially at the exterior periphery of said disk underneath the platforms and between two roots of adjacent radial blades, each wedge being in tangential contact with the two adjacent blades. |
| 主权项 |
1. Fan for a multi-flow turboshaft engine, comprising a fan disc which is capable of being rotated about a longitudinal axis and which is provided, on the periphery thereof, with radial blades, each comprising a root which is slidably inserted into a groove in the disc, and, on the outside of said fan, a vane, attached platforms which surround the disc by being placed between the radial blades, and damping shims which are provided in respective cavities defined by the outer surface of the disc, the roots of the vanes, and the platform,
wherein the damping shims are arranged tangentially on the outer periphery of said disc, close to the outer surface thereof, between two roots of adjacent radial blades, are elastically deformable, and have a tangential width which is at least equal to the distance separating two adjacent blades on the periphery of the disc, each shim being mounted so as to be in tangential contact, as a result of compression, with the two adjacent blades, and a fixed support being provided in each cavity receiving a shim in order to radially hold said shim in position. |
