A pressurized impeller, including a hub, a tip, a forward cavity wall including a first forward surface and a first aft surface, an aft cavity wall including a second forward surface and a second aft surface, an axial opening, a radial opening arranged proximate the tip, one or more blades arranged on the first forward surface, a plurality of fluid flow paths formed between the axial opening, the radial opening, and the one or more blades, an internal pressurized cavity formed between the forward cavity wall and the aft cavity wall, and a support structure arranged in the internal pressurized cavity.