公开(公告)号：US11718396B2

公开(公告)日：2023-08-08

申请号：US16439487

申请日：2019-06-12

Applicant: Bell Helicopter Textron Inc.

Inventor： Christopher Edward Foskey ,  Jeffrey Mark Bosworth

IPC: B64C29/00 ,  B64C11/18 ,  B64C3/38 ,  B64C11/28 ,  B64C27/51

CPC classification number: B64C29/0033 ,  B64C3/38 ,  B64C11/18 ,  B64C11/28 ,  B64C27/51

Abstract: Embodiments are directed to systems and methods for deploying an outboard rotor blade of proprotor pylon to act as an extended lifting surface. Blade control actuators may provide primary rotor flight control as well as providing fold linkage actuation when fold locks are disengaged. During cruise flight, the blade control actuator may provide feathering inputs to the extended rotor blade, wherein the amplitude and frequency of feathering inputs are tuned to mitigate undesirable wing and fuselage dynamic modes thereby enhancing aircraft stability. The deployed rotor blades also improve the total lifting area of the aircraft, which may increase aircraft range and efficiency.