Abstract: A wet brake assembly and method for cooling separator plates in a wet brake assembly are disclosed. The wet brake assembly may comprise a hub rotatable about an axis and a brake pack. The hub may include a plurality of legs that define a plurality of troughs in the hub. The brake pack may include a plurality of friction disks disposed around and rotatable with the hub, and a plurality of stationary separator plates. Each separator plate may define a gap with at least one of the friction disks. Each trough may define an unobstructed axial flow path between the hub and the brake pack, and each gap may define a radial flow path across the brake pack. An intersection between the axial flow path and the radial flow path is configured to change positions with rotation of the hub and the friction disks.