Power plant thrust management system for turboprop engines
AssigneePratt & Whitney Canada Corp.
InventorsKeith Morgan, Ghislain Plante, Tania Fauchon
Life of this patent
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Abstract
Methods and systems for operating a turboprop engine having a high pressure spool and a low pressure spool rotating independently from one another. Each spool contains at least one compressor stage and the low pressure spool is connected to a propeller. The method comprises determining a target temperature-corrected rotational speed of the low pressure spool for a given set of operating parameters; and controlling a mechanical speed of the low pressure spool to maintain the temperature-corrected rotational speed of the low pressure spool substantially constant throughout at least a portion of a range of a power demand on the turboprop engine.
Claims20
A method of operating a turboprop engine having a high pressure spool and a low pressure spool rotating independently from one another, each spool containing at least one compressor stage, and the low pressure spool is connected to a propeller, the method comprising:
- determining a target temperature-corrected rotational speed of the low pressure spool for a given set of operating parameters;
- and
- controlling a mechanical speed of the low pressure spool to maintain the temperature-corrected rotational speed of the low pressure spool substantially constant throughout at least a portion of a range of a power demand on the turboprop engine.
A system for operating a turboprop engine having a high pressure spool and a low pressure spool rotating independently from one another, each spool containing at least one compressor stage, and the low pressure spool is connected to a propeller, the system comprising:
- a processing unit;
- and
- a non-transitory memory communicatively coupled to the processing unit and comprising computer-readable program instructions executable by the processing unit for:
- determining a target temperature-corrected rotational speed of the low pressure spool for a given set of operating parameters;
- and
- controlling a mechanical speed of the low pressure spool to maintain the temperature-corrected rotational speed of the low pressure spool substantially constant throughout at least a portion of a range of a power demand on the turboprop engine.
A non-transitory computer-readable medium having stored thereon program code for operating a turboprop engine having a high pressure spool and a low pressure spool rotating independently from one another, each spool containing at least one compressor stage, and the low pressure spool is connected to a propeller, the program code executable by a processor for:
- determining a target temperature-corrected rotational speed of the low pressure spool for a given set of operating parameters;
- and
- controlling a mechanical speed of the low pressure spool to maintain the temperature-corrected rotational speed of the low pressure spool substantially constant throughout at least a portion of a range of a power demand on the turboprop engine.
Dependencies are inferred from the claim text.