Variable cycle gas turbine engine

摘要

One embodiment of the present invention is a unique variable cycle gas turbine engine. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for variable cycle gas turbine engines. Further embodiments, forms, features, aspects, benefits, and advantages of the present application will become apparent from the description and figures provided herewith.

主权项

1. A variable cycle gas turbine engine, comprising:
a compressor configured to compress a core gas flow; a combustor in fluid communication with the compressor and configured to combust the core gas flow; a primary turbine drivingly coupled to the compressor and configured to receive the core gas flow, wherein the primary turbine is configured to drive the compressor; an auxiliary turbine drivingly coupled to the compressor; a valve configured to selectively direct a portion of the core gas flow to the auxiliary turbine; and a controller structured to selectively operate the valve such that the portion of the core gas flow is directed to the auxiliary turbine, wherein the auxiliary turbine is configured to extract power from the portion of the core gas flow and supply the power to the compressor when the valve is open through action of the controller; wherein the controller is configured to selectively operate the valve according to at least one of a look-up table, a rate schedule, sensed or calculated engine parameters, engine inlet conditions, aircraft speed and power lever angle.