| 摘要 |
<p>An annulus filler (100) is provided for mounting to a rotor disc (34) of a gas turbine engine and bridging the gap between two adjacent blades (25) attached to the rotor disc. The annulus filler is substantially entirely formed from a polymer matrix composite material. It has an outer lid (30) which defines an airflow surface for air being drawn through the engine in an axial airflow direction, and a support structure which is connectable to the rotor disc to support the rear of the lid on the rotor disc. The support structure has two support walls (32) extending from opposing lateral sides of the lid to an attachment strap (36) for receiving a hook (38) on the rotor disc, the attachment strap bridging the support walls. In use, under centrifugal loads, the opposing support walls resiliently deform to allow outward radial movement of the lid. Each support wall has a concave rear edge (57) which extends rearwardly and radially outwardly from the rear of the attachment strap towards a trailing edge of the lid. Each rear edge has a first curved section (61) proximal the attachment strap, a second curved section (63) proximal the trailing edge and a substantially straight section (65) therebetween.</p> |
