The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 25, 2025
Filed:
Apr. 01, 2025
General Electric Company, Evendale, OH (US);
Randy M. Vondrell, Newport, KY (US);
Keith A. Miedema, Fairfield, OH (US);
GENERAL ELECTRIC COMPANY, Evendale, OH (US);
Abstract
A turbofan engine for an aircraft includes a fan and a fan actuation system. The fan has a plurality of fan blades coupled to a fan shaft having one or more fan bearings. The fan blades are rotatable about a pitch axis. The fan actuation system is disposed within a fan hub and includes one or more actuators for rotating the fan blades about the pitch axis and one or more radial thrust bearings. The fan actuation system is characterized by a fan actuation system length envelope in a range of 8.5 to 24 and given by Nis a number of the fan blades, Dis a fan tip diameter of the fan blades, Ris a thrust bearing radius of the radial thrust bearings, and Lis an axial length from a fan hub tip to the fan bearings.