초록

A modular fuel nozzle configuration is defined which permits lower-cost manufacturing operations such as injection moulding to be employed. Also described is a method of making such a component.

대표청구항 ▼

What is claimed is: 1. A method of making an air blast fuel nozzle for use in a gas turbine engine, the method comprising the steps of: metal injection moulding a nozzle body in a first mould; exposing at least a portion of the nozzle body from the first mould; while the nozzle body is still in a g

What is claimed is: 1. A method of making an air blast fuel nozzle for use in a gas turbine engine, the method comprising the steps of: metal injection moulding a nozzle body in a first mould; exposing at least a portion of the nozzle body from the first mould; while the nozzle body is still in a green state, impressing a second mould against at least a portion of the exposed portion of the nozzle body, the second mould leaving an array of open-section air channels in the exposed portion of the nozzle body, the open-section air channels providing aerodynamic airflow surfaces; sintering the nozzle body; providing a second body; covering the open-section air channels with the second body to form air swirl passages, and joining the second body to the nozzle body. 2. The method of claim 1 wherein the step of joining comprises placing the second body adjacent to the nozzle body during sintering and sintering the two bodies together. 3. The method defined in claim 1, wherein the second mould is pressed against the nozzle body in a first axial direction and then withdrawn in a second axial direction opposite to said first axial direction. 4. The method defined in claim 1, wherein the open-section channels are defined in a conical peripheral surface of the nozzle body about a central fuel passage extending axially through the nozzle body.