Textron Inc.
SYSTEM AND METHOD FOR GIMBAL LOCK AVOIDANCE IN AN AIRCRAFT

Abstract:

A rotorcraft is described and includes an inertial measurement unit ("IMU") sensor mounted to the rotorcraft, the IMU sensor oriented relative to the rotorcraft such that a roll attitude of the rotorcraft occurs about a Z-axis and has a range of .+-.90 degrees, a pitch attitude of the rotorcraft occurs about an X-axis and has a range of .+-.180 degrees, and a yaw attitude of the rotorcraft occurs about a Y-axis and has a range of .+-.180 degrees.