US 12,448,119 B2
Single boost hydraulic control system with magnetorheological actuator
Simon Rodrigue, Lorraine (CA); Carlos Alexander Fenny, Fort Worth, TX (US); and Pasquale Spina, Laval (CA)
Assigned to Textron Innovations Inc., Providence, RI (US)
Filed by Textron Innovations Inc., Providence, RI (US)
Filed on Mar. 31, 2023, as Appl. No. 18/193,840.
Prior Publication US 2024/0326993 A1, Oct. 3, 2024
Int. Cl. B64C 27/00 (2006.01); B64C 27/12 (2006.01); F15B 19/00 (2006.01); G05D 17/02 (2006.01)
CPC B64C 27/12 (2013.01) [F15B 19/005 (2013.01); G05D 17/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An aircraft comprising:
a fuselage;
a rotor system connected to the fuselage and comprising at least one rotor blade;
a pilot input device;
a single hydraulic servo actuator in mechanical communication with the pilot input device and the rotor system for providing force assistance in connection with the pilot input device; and
a magnetorheological (MR) actuator in mechanical communication with the pilot input device and the rotor system for providing auto pilot assistance in connection with the pilot input device;
wherein subsequent to detection of a failure of the single hydraulic servo actuator, the MR actuator is caused to provide force assistance to the pilot input device.