Composite fan case with integral containment zone

F - Mech Eng,Light,Heat,Weapons – 01 – D

Patent

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Details

F01D 25/24 (2006.01) F01D 11/12 (2006.01) F01D 21/14 (2006.01)

Patent

CA 2664051

A turbofan engine which has a composite fan case surrounding a fan with a plurality of fan blades is disclosed. The composite fan case includes a containment zone having an inner fabric layer composed of resin-impregnated fibres substantially uni- axially oriented in a common angular direction corresponding to a blade release angle of the fan blades. The fan case also includes a composite outer shell and an energy absorbing core disposed radially between the inner fabric layer and the composite outer shell. The energy absorbing core includes non resin impregnated multidirectional fibres.

La présente porte sur un moteur de réacteur à double flux qui comprend un carter de soufflante entourant une soufflante avec plusieurs pales de soufflante. Le carter de soufflante composite inclut une zone de confinement munie d'une couche de tissu intérieure composée de fibres imprégnées de résine orientées essentiellement de manière uni-axiale dans une direction angulaire commune correspondant à l'angle de dégagement de pale des pales de soufflante. Le carter de soufflante inclut une enveloppe extérieure composite et un noyau absorbant d'énergie disposé de manière radiale entre la couche de tissu intérieure et l'enveloppe extérieure composite. Le noyau absorbant d'énergie inclut des fibres multidirectionnelles non imprégnées de résine.

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