Thermal soak-back mitigation
AssigneeROLLS-ROYCE plc
InventorsDavid M. Donnelly, Derek S. Wall, Jonathan Wieland
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Abstract
A method of operating a gas turbine engine having a spool includes executing, by a controller, a shutdown procedure. The shutdown procedure includes: performing an idle rotation operation; determining a parameter associated with a thermal condition of the gas turbine engine while the idle rotation operation is performed; determining, based on the determined parameter, whether the gas turbine engine has met a pre-determined criterion corresponding to a thermally stabilised condition; and terminating the idle rotation operation in response to a determination that the gas turbine engine has met the pre-determined criterion.
Claims16
A method of operating a gas turbine engine having a spool, the method comprising:
- executing, by a controller, a shutdown procedure which includes:
- performing an idle rotation operation;
- determining a parameter associated with a thermal condition of the gas turbine engine while the idle rotation operation is performed;
- determining, based on the determined parameter, whether the gas turbine engine has met a pre-determined criterion corresponding to a thermally stabilised condition;
- and
- terminating the idle rotation operation in response to a determination that the gas turbine engine has met the pre-determined criterion.
Dependencies are inferred from the claim text.