Ram air fan diffuser with perforated side walls

摘要

A diffuser for a ram air fan assembly includes a perforated cone, an inlet ring seal, and an outlet ring seal. The perforated cone has a frustoconical shape symmetrical about an axis of the diffuser. The inlet ring seal is attached to, and axially disposed about, a first end of the perforated cone. The inlet ring seal includes a fan housing connection having a cylindrical shape. The outlet ring seal is attached to, and axially disposed about, a second end of the perforated cone. An average external diameter of the second end is greater than an average external diameter of the first end such that the perforated cone extends away from the inlet ring seal and radially outward from the axis of the diffuser.

主权项

1. A ram air fan diffuser for a ram air fan assembly, the diffuser comprising:
a perforated cone having a frustoconical shape symmetrical about an axis of the diffuser with a plurality of perforations between a first end and a second end of the perforated cone; an inlet ring seal attached to and axially disposed about the first end of the perforated cone; and an outlet ring seal attached to and axially disposed about the second end of the perforated cone, wherein the outlet ring seal comprises a cylindrical exterior surface symmetrical about the axis of the diffuser, an o-ring channel within the cylindrical exterior surface, and a diffuser rim extending radially beyond the second end of the perforated cone and radially outward in a plane perpendicular from the axis of the diffuser; wherein an average external diameter of the second end of the perforated cone is greater than an average external diameter of the first end of the perforated cone such that the perforated cone extends away from the inlet ring seal and radially outward from the axis of the diffuser.