This dual-purpose component features an inner section driven by hot exhaust gases from the engine core, while its outer section extends into the bypass duct to act as a fan blade moving cold air. It is primarily found in aft-fan turbofan engines where the fan is mounted at the rear of the engine rather than the front. The design simplifies the engine architecture by combining the power extraction and thrust generation into a single rotating stage.
Heard on the job
We need to check the tip clearances on the aft blucket assembly before returning the engine to service.