Patent ID: 11897619
Assignee: ROSEMOUNT AEROSPACE INC.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 11:
12. A method of monitoring an ice protection system of a rotorcraft or an aircraft, the method comprising:
sensing a liquid water content of air outside of the rotorcraft or the aircraft;
sensing an outside air temperature;
sensing a voltage of the ice protection system;
determining a heater duty cycle based on the sensed liquid water content and the sensed outside air temperature;
applying heat to rotating blades of the rotorcraft or the aircraft according to the heater duty cycle;
determining an anticipated ice shed time for ice to shed from the rotating blades based on the sensed voltage and the sensed outside air temperature;
sensing a torque of the rotating blades;
determining an actual ice shed time for ice to shed from the rotating blades based on the sensed torque;
determining a status of the ice protection system based on the anticipated ice shed time and the actual ice shed time; and
outputting the status of the ice protection system for consumption by a consuming system.