US Patent 11187149 Case-integrated turbomachine wheel containment

Various systems and methods are provided for a shroud of a turbomachine. In one example, a turbomachine includes a case and a rotor rotatably coupled to the case and configured to transfer energy between the rotor and a working fluid. The case includes a shroud housing the rotor, the shroud including an inner shell, an outer shell, and a lattice structure positioned between the inner shell and the outer shell.