US 12,698,736 B1 · Air circuit for aircraft propulsion system

Abstract

A propulsion system assembly includes a core flowpath, a bypass flowpath, a flowpath wall, an ejector body and an air circuit. The bypass flowpath is radially outboard of the core flowpath. The flowpath wall forms an inner peripheral boundary of the bypass flowpath. The flowpath wall extends axially along and circumferentially about an axis. The ejector body is disposed in the bypass flowpath. The ejector body is spaced radially outboard from the flowpath wall by a first distance such that a portion of the flowpath radially between the ejector body and the flowpath wall forms an ejector passage. The ejector passage extends axially along the axis from a passage inlet to a passage outlet. The air circuit extends from a circuit inlet to a circuit outlet. The circuit inlet is fluidly coupled to the core flowpath. The circuit outlet is fluidly coupled to the bypass flowpath at the passage outlet.

Claims20

Dependent claims

An assembly for an aircraft propulsion system, comprising:

a core flowpath extending axially along an axis;
a bypass flowpath radially outboard of the core flowpath, the bypass flowpath extending axially along the axis;
a flowpath wall forming an inner peripheral boundary of the bypass flowpath, the flowpath wall extending axially along and circumferentially about the axis;
an ejector body disposed in the bypass flowpath, the ejector body spaced radially outboard from the flowpath wall by a first distance such that a portion of the flowpath radially between the ejector body and the flowpath wall forms an ejector passage, and the ejector passage extending axially along the axis from a passage inlet to a passage outlet;
and
an air circuit extending from a circuit inlet to a circuit outlet, the circuit inlet fluidly coupled to the core flowpath, and the circuit outlet fluidly coupled to the bypass flowpath at the passage outlet,
wherein the ejector passage is configured to accelerate a flow of bypass air to draw bleed air out of the air circuit.

4 more elements

Dependencies are inferred from the claim text.

Air circuit for aircraft propulsion system

Life of this patent

Air circuit for aircraft propulsion system

Life of this patent

Abstract

Claims20