Disk with lattice features adapted for use in gas turbine engines

A wave rotor comprising

• a rotor assembly mounted for rotation about a central axis of the wave rotor, the rotor assembly including an inner band arranged around the central axis, an outer band arranged radially outward and co-axially along the inner band, and a plurality of webs arranged to extend radially between the inner and outer bands to form a plurality of axially-extending combustion cells arranged circumferentially adjacent one another,
• a shaft extending along the central axis and adapted to receive rotational energy to cause the shaft to rotate about the central axis, and
• a disk coupled to the inner band of the rotor assembly and the shaft and configured to transmit the rotational energy from the shaft to the rotor assembly to cause the rotor assembly to rotate about the central axis, the disk formed to include a plurality of concentric lattice apertures that extend axially through the disk,
• wherein each lattice aperture extends circumferentially partway around the central axis and the plurality of lattice apertures are defined by a plurality of concentric rings and a plurality of radially extending spokes circumferentially offset from one another that extend between the plurality of rings to provide a tortuous path for heat to travel between the rotor assembly and the shaft while allowing thermal growth of the disk, and
• wherein at least one of the rings has a radially-outer surface and the radially-outer surface is formed to include a radially inwardly extending depressed arcuate portion and one of the plurality of spokes is coupled to the at least one ring at the depressed arcuate portion and arranged to extend radially inwardly toward the central axis.

A wave rotor comprising

• a rotor assembly mounted for rotation about an axis, the rotor assembly including an inner band arranged around the axis, an outer band arranged circumferentially around the inner band, and a plurality of webs that extend radially between the inner band and the outer band to form a plurality of axially-extending combustion cells arranged circumferentially adjacent one another relative to the axis,
• a shaft extending along the central axis and configured to rotate about the central axis, and
• a disk coupled with the rotor assembly and the shaft and configured to transmit rotational energy from the shaft to the rotor assembly, the disk including a plurality of concentric rings and a plurality of radially extending spokes that extend between the plurality of rings, each spoke circumferentially offset from one another to define a plurality of concentric lattice apertures that extend axially through the disk and circumferentially partway around the central axis,
• wherein the plurality of spokes includes a first set of spokes and a second set of spokes radially and circumferentially offset from the first set of spokes and each lattice aperture is defined circumferentially between directly neighboring spokes.