Antivibration kit-of-parts and parts therefor, airfoil structure and aircraft provided therewith

US11840336B2 · kind B2 · utility

Assignee

• AIRBUS OPERATIONS LIMITED · DE

Inventors

• Ivano Bertolini · Hamburg, DE
• Henrik LÜTTMANN · Hamburg, DE
• Wim Westbroek · Hamburg, DE

Key dates

• Filing date: May 26, 2020
• Grant date: Dec 12, 2023
• Expiry date: Aug 16, 2040

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16F2238/022
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

To reduce vibration of movable airfoil structures, such as rudders, elevators, and ailerons, a spring device, a leaf spring for example, is mounted to an airfoil mounting structure, such as a vertical tail plane, horizontal tail plane or the wings, such that the spring device exerts a force on a cam device, which transforms the spring force into an airfoil torque. The airfoil torque is applied to the airfoil structure and thus reduces a risk of vibration. The cam device is configured to redirect the spring force such that when the airfoil structure is moved in a first direction, torque decreases and when moved in the opposite second direction the torque is zero.