US Patent 11891915 Auxiliary turbomachinery weight reduction using internal engineered design

A rotor for a rotary machine includes a hub centered on a central axis, the hub comprising a shaft portion extending along the central axis, a disk portion circumferentially disposed about the shaft portion, a platform portion as a radially outermost extent of the shaft portion and the disk portion, and a branched support structure extending radially inward from the platform portion. The rotor further includes a plurality of blades extending outward from the platform portion of the hub. The branched support structure comprises a hub region and a blade support region associated with one blade of the plurality of blades.