Patent ID: 8882454

Claim:
A ram air fan bearing housing for a ram air fan assembly, the bearing housing comprising: a bearing section comprising a cylindrical interior symmetrical about an axis of the bearing housing; the cylindrical interior for containing a journal bearing; a disk section at one end of the bearing section and perpendicular to the axis of the bearing housing, the disk section for connecting the bearing section to the ram air fan assembly, the disk section comprising: an outer ring at an edge of the disk section opposite the bearing section, the outer ring comprising: a plurality of bolt holes; and a circumferential support rib radially inward from the plurality of bolt holes; and a disk wall connecting the outer ring to the bearing section, the disk wall comprising: a plurality of arcuate cooling slots, each cooling slot defined by a plurality of edges including a first arcuate edge; the first arcuate edge positioned adjacent to and radially inward from the circumferential support rib at a first radial distance from the axis of the bearing housing; the first arcuate edge having an arc center at the axis of the bearing housing; and a plurality of radial support ribs extending axially along most of the length of the bearing section, and extending radially along the disk wall from the bearing section to the circumferential support rib; the plurality of radial support ribs spaced equally about the axis of the bearing housing; the plurality of radial support ribs and the plurality of arcuate cooling slots alternating about the axis of the bearing housing.