Sealed hub and shaft fairing for rotary wing aircraft

US11235869B2 · kind B2 · utility

Assignee

• SIKORSKY AIRCRAFT CORPORATION · US

Inventors

• Thomas Alan Egolf · Stratford, US
• Robert D. Beatty · Trumbull, US
• Gary Law · Shelton, US
• Chris P. Butler · Frisco, US
• Eric Lucien Nussenblatt · Stamford, US
• Edward Reed · Oosterdijk, US

Key dates

• Filing date: Mar 27, 2020
• Grant date: Feb 1, 2022
• Expiry date: May 9, 2040

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B64C2027/8281
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An aircraft includes an airframe, an extending tail, a counter rotating, coaxial main rotor assembly including an upper rotor assembly and a lower rotor assembly, and a translational thrust system positioned at the extending tail. The translational thrust system provides translational thrust to the airframe. An upper hub fairing is positioned at the upper rotor assembly. A lower hub fairing is positioned at the lower rotor assembly. A shaft fairing is disposed between the upper hub fairing and the lower hub fairing. The upper hub fairing is substantially sealed to the shaft fairing and the lower hub fairing is substantially sealed to the shaft fairing.