公开(公告)号：US10691140B2

公开(公告)日：2020-06-23

申请号：US16108479

申请日：2018-08-22

Applicant: Textron Innovations Inc.

Inventor： Sung Kyun Kim

IPC: G05D1/08 ,  B64C13/04 ,  G05D1/10 ,  B64C13/50

Abstract: In accordance with an embodiment, a method of operating a rotorcraft includes transitioning from a first mode to a second mode when a velocity of the rotorcraft exceeds a first velocity threshold. Transitioning between the first and second modes includes fading out a gain of a dynamic controller over a first period of time, and decreasing a value of an integrator of the dynamic controller over a second period of time.

公开(公告)号：US20200031490A1

公开(公告)日：2020-01-30

申请号：US16436177

申请日：2019-06-10

Applicant: Textron Innovations Inc.

Inventor： Christopher M. Bothwell ,  Robert Earl Worsham, II ,  Sung Kyun Kim ,  Brandon Jeffrey Thomas

IPC: B64D45/00 ,  B64C27/08 ,  B64C27/68 ,  B64C13/10 ,  B64C27/78 ,  B64C27/82 ,  B64C13/50 ,  B64D43/00

Abstract: In an embodiment, a rotorcraft includes: tail rotor blades; a tail rotor actuator coupled to the tail rotor blades such that the pitch of the tail rotor blades varies according to a current extension of the tail rotor actuator; pilot flight controls electrically coupled to the tail rotor actuator; and a flight control computer electrically coupled to the tail rotor actuator and the pilot flight controls, the flight control computer configured to: determine the current extension of the tail rotor actuator; determine whether the current extension of the tail rotor actuator is within a margin of a maximum extension of the tail rotor actuator; and indicate a first warning to a pilot in response to the current extension of the tail rotor actuator being within the margin of the maximum extension of the tail rotor actuator.