Zero acoustic splice fan case liner

Details Zero acoustic splice fan case liner Zero acoustic splice fan case liner

F - Mech Eng,Light,Heat,Weapons

02

C

F02C 7/045 (2006.01) B32B 3/12 (2006.01) B32B 7/12 (2006.01) F02C 7/24 (2006.01) F02K 1/82 (2006.01)

Patent

CA 2507082

A liner assembly for a fan case includes a noise attenuation layer covered by a face sheet. The face sheet includes openings to the underlying noise attenuation layer. The face sheet and noise attenuation layer include acoustically transparent joints. The noise attenuation layer includes a first side joined to a second side at a seam by an adhesive strip. The adhesive strip bonds the first side to the second side without filling any chambers. The face sheet includes a joint filled with an adhesive providing the desired uninterrupted surface within the fan case. Openings are formed through the joint and the adhesive to communicate with the underlying noise attenuation layer. The joint and seam become essentially transparent acoustically to improve noise attenuation performance.

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