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:
Jul. 01, 2025
Filed:
Dec. 29, 2023
General Electric Company, Schenectady, NY (US);
Randy M. Vondrell, Newport, KY (US);
Keith A. Miedema, Fairfield, OH (US);
GENERAL ELECTRIC COMPANY, Evendale, OH (US);
Abstract
A turbofan engine includes a fan and a fan actuation system. The fan has a plurality of fan blades. Each of the plurality of fan blades is rotatable about a pitch axis. The fan actuation system includes one or more actuators for rotating the plurality of fan blades about the pitch axis and one or more thrust bearings. The fan actuation system is characterized by a fan actuation system envelope in a range of 300 to 1860. The fan actuation system envelope is given by where Nis a number of the plurality of fan blades, Dis a fan tip diameter of the plurality of fan blades, Mis a Mach number of the turbofan engine at cruise operating conditions, and Ris a thrust bearing radius of the one or more thrust bearings.