System and method for mitigating bowed rotor in a gas turbine engine

A turbomachine for a vehicle, comprising:

• a first rotatable component;
• a first power source operatively coupled with the first rotatable component;
• a second power source selectively coupled with the first rotatable component;
• a torque source operatively coupled directly to the first rotatable component and selectively coupled to the first power source and the second power source;
• and
• a controller having one or more processors and one or more memory devices, the one or more memory devices storing instructions that when executed by the one or more processors cause the one or more processors to perform operations, in performing the operations, the one or more processors are configured to:
• receive an input indicating an engine shutdown of the turbomachine, the input is received in response to when the first power source stops running and stops providing power to the torque source;
• and
• in response to the engine shutdown, cause the second power source to provide power to and rotate the first rotatable component,
• wherein the one or more processors of the controller control the second power source to provide power to and rotate the first rotatable component until the second power source is completely depleted,
• wherein the second power source comprises a rechargeable battery, and
• wherein the controller includes a health and status monitoring system that indicates a status of the rechargeable battery and a health status of the torque source, and wherein the first rotatable component comprises a low pressure spool of a gas turbine engine.