US 11,897,619 B2
Heating prognostics system for ice protection system
Brian Brent Naslund, Chanhassen, MN (US); Jeremy S. Burns, Farmington, MN (US); Matthew Webb, Lakeville, MN (US); Jason Lee Skoglund, New Hope, MN (US); Vincent R. LoPresto, Eagan, MN (US); and Darren G. Jackson, Prior Lake, MN (US)
Assigned to Rosemount Aerospace Inc., Burnsville, MN (US)
Filed by Rosemount Aerospace Inc., Burnsville, MN (US)
Filed on Nov. 22, 2021, as Appl. No. 17/532,677.
Prior Publication US 2023/0159172 A1, May 25, 2023
Int. Cl. B64D 15/20 (2006.01); B64D 15/12 (2006.01); B64D 45/00 (2006.01)
CPC B64D 15/20 (2013.01) [B64D 15/12 (2013.01); B64D 2045/0085 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of monitoring an ice protection system of a rotorcraft or an aircraft, the method comprising:
applying heat to rotating blades of the rotorcraft or the aircraft according to a heater duty cycle;
determining an anticipated ice shed time for ice to shed from the rotating blades;
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.