Cooling fuel injector system for an attritable engine
AssigneeUnited Technologies Corporation
InventorsLawrence A. Binek, David W. Morganson
Life of this patent
Estimating the term…
Abstract
An additively manufactured attritable engine includes a compressor section, a combustion section, a turbine section, and an engine case wall, which surrounds the compressor section, the combustion section, and the turbine section. The engine case wall includes a first cavity embedded in the engine case wall that defines an injector that is in fluid communication with the combustion section. The engine case wall includes at least one second cavity embedded within the engine case wall and defines at least one cooling channel that is in thermal communication through the engine case wall with the injector.
Claims16
An additively manufactured attritable engine comprising:
- a compressor section;
- a combustion section;
- a turbine section;
- and
- an engine case wall surrounding the compressor section, the combustion section, and the turbine section, the engine case wall comprising:
- a first cavity, embedded within the engine case wall, defining an injector, wherein the injector is in fluid communication with the combustion section;
- and
- at least one second cavity, embedded within the engine case wall, defining at least one cooling channel, wherein the at least one cooling channel is in thermal communication through the engine case wall with the injector.
A method of testing a fluid dispensing system in an attritable engine that includes a fuel line and an N number of injectors, the method comprising:
- injecting a cooling fluid into an at least one cooling hole for each of (N−1) injectors;
- inducing a phase change to a flow test fluid in each of (N−1) injectors, preventing flow through each of (N−1) injectors;
- and
- measuring a flow rate of the flow test fluid through a single unblocked injector.
An additively manufactured attritable engine comprising:
- a compressor section;
- a combustion section;
- a turbine section;
- and
- an engine case wall surrounding the compressor section, the combustion section, and the turbine section, the engine case wall comprising:
- a first cavity, embedded within the engine case wall, defining an injector, wherein the injector is in fluid communication with the combustion section;
- and
- at least one second cavity, embedded within the engine case wall, defining at least one cooling channel, wherein the at least one cooling channel is in thermal communication through the engine case wall with the injector, wherein the at least one cooling channel has an inlet and an outlet at an exterior surface of the engine case wall, tunnels through the engine case wall, and circumnavigates the injector.
Dependencies are inferred from the claim text.