公开(公告)号：US11753154B2

公开(公告)日：2023-09-12

申请号：US17370817

申请日：2021-07-08

Applicant: Bell Textron Inc.

Inventor： Matthew P. Misiorowski ,  Joseph H. Schmaus

IPC: B64C27/605 ,  B64C27/00 ,  B64C29/00

CPC classification number: B64C27/001 ,  B64C27/605 ,  B64C29/0033

Abstract: A control system for a multi-rotor aircraft is described that results in lower operating noise. Allowing blades to flap during flight reduces aerodynamic interference as blades pass by other aircraft components, such as wings or the fuselage. Pitch links coupled to a rotational swashplate can be used to allow flapping during flight. The swashplates can allow the canting of the rotors to change a rotational or out-of-plane angle of the blades to decrease noise.

公开(公告)号：US20230009101A1

公开(公告)日：2023-01-12

申请号：US17370817

申请日：2021-07-08

Applicant: Bell Textron Inc.

Inventor： Matthew P. Misiorowski ,  Joseph H. Schmaus

IPC: B64C27/00 ,  B64C27/605 ,  B64C29/00

Abstract: A control system for a multi-rotor aircraft is described that results in lower operating noise. Allowing blades to flap during flight reduces aerodynamic interference as blades pass by other aircraft components, such as wings or the fuselage. Pitch links coupled to a rotational swashplate can be used to allow flapping during flight. The swashplates can allow the canting of the rotors to change a rotational or out-of-plane angle of the blades to decrease noise.