Rotor assembly with static mast and pivoting rotor hub

US11691723B2 · kind B2 · utility

Assignee

• Textron Innovations Inc. · US

Inventors

• Thomas C. Parham, Jr. · Colleyville, US
• Frank B. Stamps · Colleyville, US
• Jouyoung Jason Choi · Fort Worth, US
• Albert G. Brand · Fort Worth, US
• Michael Scott Seifert · Southlake, US
• Richard E. Rauber · Arlington, US
• John Elton Brunken, Jr. · Colleyville, US

Key dates

• Filing date: May 4, 2021
• Grant date: Jul 4, 2023
• Expiry date: May 4, 2041

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B64C27/605
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A gimbaled rotor assembly for an aircraft. The gimbaled rotor assembly including a static mast; a spherical bearing comprising an inner component and an outer component pivotable relative to each other about a bearing focus, the inner component fixedly coupled to the static mast; a rotor hub rotatably coupled to the outer component, allowing for relative rotation of the rotor hub about a rotor axis and for pivoting together with the outer component about the bearing focus; and a primary hub spring coupling the outer component to the static mast and configured for opposing pivoting of the rotor hub about the bearing focus from a neutral position.