Patent ID: 7673461

Claim:
A structural turbine engine casing comprising, a central hub; at least one intermediate shroud; an external ring; links which are pivotally connected to the external ring and the intermediate shroud; and a series of radially fastened hollow arms which connect the intermediate shroud and the central hub, wherein the central hub, the intermediate shroud, and the external ring are concentric about an axial direction, wherein the series of arms comprises at least one main arm and at least one secondary arm, each main arm being arranged in the continuation of a link and having a mass which is greater than that of a secondary arm arranged at a distance from the links, wherein a length of the main arm and a length of the secondary arm in the axial direction is the same, and wherein each arm comprises a hollow main body which includes a leading edge and side walls, and wherein each main arm includes a wall thickness which is greater than a wall thickness of each secondary arm across at least one transverse section.