Patent ID: 7192243

Claim:
A gas turbine engine rotor blade containment assembly comprising a generally cylindrical, or frustoconical, casing, the casing having at least one arched portion, the at least one arched portion extending circumferentially around the casing, the at least one arched portion having axial ends, the at least one arched portion comprising a radially inwardly extending arch in which the trough of the arch is radially inwardly of an imaginary cylinder, or imaginary frustocone interconnecting the axial ends of the arch, the at least one arched portion surrounding the rotor blades of the gas turbine engine a first axial end of the at least one arched portion being arranged substantially in a plane containing the leading edges of the rotor blades and a second axial end of the at least one arched portion being arranged substantially in a plane containing the trailing edges of the rotor blades.