US 12,441,465 B2
Anti-backlash flight control actuator system
Bernard Ahyow, Irvine, CA (US)
Assigned to Archer Aviation Inc., San Jose, CA (US)
Appl. No. 17/913,784
Filed by Archer Aviation Inc., San Jose, CA (US)
PCT Filed Mar. 26, 2021, PCT No. PCT/US2021/024340
§ 371(c)(1), (2) Date Sep. 22, 2022,
PCT Pub. No. WO2021/221838, PCT Pub. Date Nov. 4, 2021.
Claims priority of provisional application 63/000,682, filed on Mar. 27, 2020.
Prior Publication US 2024/0208645 A1, Jun. 27, 2024
Int. Cl. B64C 27/72 (2006.01); B64C 27/625 (2006.01); B64C 27/68 (2006.01)
CPC B64C 27/72 (2013.01) [B64C 27/625 (2013.01); B64C 27/68 (2013.01); B64C 2027/7205 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An aircraft rotor blade pitch actuator operationally coupled to a rotor blade of an aircraft rotor, the aircraft rotor blade pitch actuator comprising:
a first motor configured to drive a first pinion gear;
a second motor configured to drive a second pinion gear;
a ring gear; and
an actuator control system comprising at least one processor configured to execute software instructions to cause the actuator control system to command the first motor to drive the first pinion gear in a first direction against the ring gear to change a blade pitch angle of the rotor blade while commanding the second motor to drive the second pinion gear in a second direction against the ring gear to reduce backlash.