公开(公告)号：US11027821B2

公开(公告)日：2021-06-08

申请号：US15876420

申请日：2018-01-22

Applicant: Bell Helicopter Textron Inc.

Inventor： Brady Garrett Atkins ,  Michael David Trantham ,  Paul David Ruckel

IPC: B64C13/16 ,  B64C29/00 ,  B64C13/50

Abstract: A system and method for preventing a maximum asymmetric condition between pylon tilt angles due to a degraded pylon in a fly-by-wire tiltrotor aircraft during transitions between airplane mode and helicopter mode includes a conversion system for imparting movement on a right and left pylon. A flight control computer is operatively connected to a set of transducers for measuring pylon angles. The flight control computer is further connected to a set of actuators which are attached to each pylon. The flight control computer receives flight dynamics input from the set of transducers and/or the pilot and sends pylon command to the set of actuators. The conversion system measures the difference between the pylon angles during the transition and provides a pylon command adjustment if the difference exceeds a preset threshold.