Highly integrated inner structure of a torsion box of an aircraft lifting surface and method of producing it

摘要

The invention provides a method for manufacturing a monolithic torsion box inner structure (40) of an aircraft lifting surface comprising the following steps: a) providing a set of laminated preforms of a composite material for forming said torsion box inner structure (40), each laminated preform being configured for constituting a part of one component of the torsion box inner structure (40); b) arranging said laminated preforms in a curing tooling and subjecting the assembly to an autoclave cycle to co-cure said laminated preforms; c) demoulding the curing tooling in a vertical direction. The invention also provides an aircraft lifting surface wherein: the inner structure (40) of each torsion box (13) is manufactured by said method and the upper and lower skins (31, 33) are attached to the torsion box inner structure (40) with mechanical attachment means.