Patent ID: 8522528

Claim:
An apparatus configured to diffuse a flow of bleed air drawn from upstream of a combustion chamber of a gas turbine engine and directed to an exhaust section of the gas turbine engine, comprising a diffuser having: an inlet collar configured to receive the flow of bleed air in a direction substantially along a longitudinal axis of the diffuser; an end wall longitudinally spaced from the inlet collar and configured to block the flow of bleed air in a direction substantially along the longitudinal axis; a first diffuser wall spaced concentrically relative to a second diffuser wall, each of the first and second diffuser walls encircling the longitudinal axis, being positioned between the inlet collar and the end wall, and including a plurality of perforations configured to permit the flow of bleed air to exit the apparatus at an angle relative to the longitudinal axis; and a third diffuser wall spaced concentrically relative to the first and second diffuser walls.