초록 ▼

A blade containment structure employs a two-layer honeycomb region radially outward of a fan blade rub strip. The two layers are separated by a septum and each layer contributes independently to strength and stiffness of the structure. A Kevlar blanket radially outward of the honeycomb region retain

A blade containment structure employs a two-layer honeycomb region radially outward of a fan blade rub strip. The two layers are separated by a septum and each layer contributes independently to strength and stiffness of the structure. A Kevlar blanket radially outward of the honeycomb region retains blade fragments which may be broken loose by ingestion of large objects such as, for example, birds. The radially inner honeycomb region is deep enough to position the septum out of the orbit of blade tips in an engine made unbalanced by loss of one or more fan blades. The septum and outer honeycomb region retains sufficient strength in the structure for supporting forward components.

대표청구항 ▼

A blade containment structure for surrounding blades of a gas turbine engine comprising: an annular honeycomb structure positionable radially outwardly of the entire axially extent of blade tips of said blades and including: a radially inner honeycomb region bounded by a septum and an inner wall spa

A blade containment structure for surrounding blades of a gas turbine engine comprising: an annular honeycomb structure positionable radially outwardly of the entire axially extent of blade tips of said blades and including: a radially inner honeycomb region bounded by a septum and an inner wall spaced radially inwardly therefrom and being faceable toward said blade tips; and a radially outer honeycomb region bounded by said septum and an outer wall spaced radially outwardly therefrom; and a fabric containment blanket disposed radially outwardly of said outer wall of said second honeycomb region and being of a type effective for containing blade fragments thrown outwardly upon damage to said blades.