| 摘要 |
An annulus filler is provided for mounting to a rotor disc of a gas turbine engine. The filler comprises a lid for bridging the gap between two adjacent blades attached to the rotor disc. The filler further comprises forward and rearward hook members projecting below the lid and configured to respectively engage with forward and rearward outwardly directed hooks provided on the rotor disc when the annulus filler is translated in a generally rearwards direction on mounting of the annulus filler to the rotor disc. The filler can further comprise a lip extending from the rear of the lid, the lip being configured to fit beneath a gas-washed element located rearwards of the annulus filler. One or more guide ramps then extend from the rear of the lip, the or each guide ramp being angled down relative to the lip to encourage the lip to slide beneath said fairing when the annulus filler is translated in the generally rearwards direction. Alternatively, or additionally, the forward hook member can have a stop surface which, on engaging the forward hook member to the forward outwardly directed hook, can abut a surface of the rotor disc to prevent or reduce rotation of the annulus filler about the forward hook member. The forward hook member then only engages with the forward outwardly directed hook when the rearward hook member also engages with the rearward outwardly directed hook.
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