公开(公告)号：US20190225322A1

公开(公告)日：2019-07-25

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.