Tunable mass damper assembly for a rotor blade

US12330776B2 · kind B2 · utility

Assignee

• Lockheed Martin Corporation · US

Inventors

• John C. Cox · Gisborne, AU
• Steven P. Lozano · Stratford, US
• David H. Hunter · Cheshire, US
• Emmett Emile Menair · Stratford, US
• Jacob Adam Fehrman · Lexington, US
• John Devin Carroll · Fort Worth, US

Key dates

• Filing date: Apr 16, 2021
• Grant date: Jun 17, 2025
• Expiry date: Feb 15, 2042

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F05B2260/964
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A tunable mass damper assembly is attachable to a rotor blade. The tunable mass damper assembly comprises a base configured to be attached to the rotor blade and a pendulum mass structure movably attached to the base and configured to move relative to the base in accordance with a rotational speed of the rotor blade about a rotor axis. The pendulum mass structure is configured to reduce vibratory forces of the rotor blade induced by a rotation of the rotor blade about the rotor axis. An entirety of the pendulum mass structure being configured to be contained within and enclosed by the rotor blade.