초록 ▼

A gas turbine fan blade containment assembly includes a fan case having an inner surface surrounding a jet engine fan and an outer surface. Mounted on the inner surface and across a blade containing region of the fan case is a load spreader layer for initially receiving a point load from a fan blade

A gas turbine fan blade containment assembly includes a fan case having an inner surface surrounding a jet engine fan and an outer surface. Mounted on the inner surface and across a blade containing region of the fan case is a load spreader layer for initially receiving a point load from a fan blade release (a “blade-out event”). A band layer is mounted to an outer surface of the fan case for carrying at least a portion of a hoop tensile load on the fan case resulting from the blade-out event, and separator film layer is mounted between the outer surface of the fan case and the band layer to retard the formation of stress concentrations in the band layer. In one embodiment, the load spreader layer includes a plurality of circumferentially-arrayed load spreader layer segments.

대표청구항 ▼

What is claimed is: 1. A fan blade containment assembly for a gas turbine engine, comprising:a fan case having an inner surface for surrounding a fan mounted for rotation about an engine axis and an outer surface, the fan case in addition having a circumferentially and axially extending blade contai

What is claimed is: 1. A fan blade containment assembly for a gas turbine engine, comprising:a fan case having an inner surface for surrounding a fan mounted for rotation about an engine axis and an outer surface, the fan case in addition having a circumferentially and axially extending blade containing region; anda first load spreader layer attached in contacting engagement with the fan case inner surface and located within the blade containing region; wherein in response to a blade-out event, the first load spreader layer mitigates cutting and gouging of the inner surface of the fan case by a fan blade released during the blade-out event, and acts as a point load spreader to distribute a point load to the fan case that is generated on the first load spreader layer by the released blade, anda first band layer mounted to the fan case outer surface in proximity to the blade containing region, wherein the first band layer is capable of carrying at least a portion of a hoop tensile load on the fan case that results from the blade-out event.