Controlling excitation loads associated with open rotor aeronautical engines

US12421864B2 · kind B2 · utility

Assignees

• General Electric Company · US
• GENERAL ELECTRIC COMPANY POLSKA SP. Z O.O. · PL

Inventors

• Amit Zutshi · Mason, US
• Rafal Sarba · Warszawa, PL
• James Ryan Reepmeyer · Cincinnati, US
• Stefan Joseph Cafaro · Chapel Hill, US
• Inenhe Mohammed Khalid · West Chester, US
• Daniel Edward Mollmann · Cincinnati, US
• Arjan Johannes Hegeman · Pembroke, US

Key dates

• Filing date: Dec 15, 2022
• Grant date: Sep 23, 2025
• Expiry date: Dec 15, 2042

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B64D2027/005
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An open rotor engine includes a core engine, a plurality of guide vanes positioned within or extending from the core engine; and a pitch change assembly operably coupled to the plurality of guide vanes. The pitch change assembly includes one or more actuators configured to change a pitch angle of respective ones of the plurality of guide vanes, and a plurality of linkage arms that are respectively movable by actuation of at least one of the one or more actuators. The plurality of linkage arms are directly or indirectly coupled to a corresponding one of the plurality of guide vanes. The plurality of linkage arms may have a length that differs from one another, and such length may orient a displacement or a range of motion of the respective linkage arm to an envelope of rotation about a guide vane axis that differs as between the plurality of guide vanes.