Multi-ring system for fuselage barrel formation

Abstract From the Canadian patent

A method of forming an aircraft fuselage barrel comprising a skin and at least one shear , tie residing within and integrally formed with said skin provides the steps of: constructing , a plurality of support structures; assembling a plurality of mold rings each mold ring , individually attached onto an associated support structure; laying up shear ties on the , plurality of mold rings; aligning said plurality of rings; coupling said plurality of rings to , each other to form a mold; fabricating and laying up at least one Hatconfigured longeron , on the mold; and laying-up material onto said mold to form a skin of the barrel and , co-curing the fuselage barrel to form an integrally …