High temperature disk conditioning system
A gas-circulation system for conditioning a disk of an aircraft may comprise a first takeoff port configured to extract a combusted gas and a second takeoff port configured to extract an uncombusted gas. A first valve may comprise an inlet in fluid communication with the first and second takeoff ports and an outlet of the first valve in fluid communication with the disk.
1. A gas-circulation system for conditioning a compressor disk of an aircraft, the gas-circulation system comprising:
a non-transitory memory communicating with a controller, the non-transitory memory having instructions stored thereon that, in response to execution by the controller, cause a processor to perform operations comprising:
commanding, by the controller, an actuator to open and close a valve that outputs a mixed gas with a desired temperature to heat a portion of the compressor disk proximate to a bore of the compressor disk, the valve comprising a mixing valve, wherein the mixed gas comprises an uncombusted gas and a combusted gas;
determining, by the controller, an engine speed;
comparing, by the controller, the engine speed to closing criteria; and
concluding, by the controller, that a failure occurred in the valve if a state of the valve is open in response to the engine speed being within the closing criteria.
2. The gas-circulation system of claim 1 , wherein the instructions further comprise:
determining, by the controller, an operational state of the aircraft; and
commanding, by the controller, the actuator to open the valve in response to the operational state corresponding to a predetermined operational state.
3. The gas-circulation system of claim 1 , wherein the instructions further comprise commanding, by the controller, the actuator to close the valve in response to the engine speed matching the closing criteria.
4. The gas-circulation system of claim 1 , wherein the instructions further comprise determining the state of the valve in response to a measurement from a thermocoupling.
5. The gas-circulation system of claim 1 , wherein the instructions further comprise responding, by the controller, to the failure by closing a check valve.
6. The gas-circulation system of claim 1 , wherein the closing criteria comprises a speed above a ground idle.
7. The gas-circulation system of claim 1 , wherein the instructions further comprise responding to the failure by reducing the engine speed to a ground idle.
8. The gas-circulation system of claim 1 , wherein the instructions further comprise monitoring the state of the valve.
9. The gas-circulation system of claim 1 , wherein the instructions further comprise cycling the valve before a flight.
10. A non-transitory, computer readable storage medium bearing instructions for conditioning a compressor, the instructions, when executed by a processor, cause said processor to perform operations comprising:
commanding an actuator to open and close a valve that outputs a mixed gas with a desired temperature to heat a portion of the compressor disk proximate to a bore of the compressor disk, the valve comprising a mixing valve, wherein the mixed gas comprises an uncombusted gas and a combusted gas;
determining an engine speed;
comparing the engine speed to closing criteria; and
concluding that a failure occurred in the valve if a state of the valve is open in response to the engine speed being within the closing criteria.