US 12,416,265 B2
Gearbox efficiency rating for turbomachine engines
Pietro Molesini, Turin (IT); Andrea Piazza, Turin (IT); and Fabio De Bellis, Turin (IT)
Assigned to GE Avio S.R.L., (IT)
Filed by GE Avio S.r.l., Turin (IT)
Filed on Oct. 11, 2023, as Appl. No. 18/484,760.
Application 18/484,760 is a continuation of application No. 18/167,751, filed on Feb. 10, 2023, granted, now 11,802,516.
Application 18/167,751 is a continuation of application No. 17/837,771, filed on Jun. 10, 2022, granted, now 11,578,666, issued on Feb. 14, 2023.
Application 17/837,771 is a continuation of application No. 17/344,736, filed on Jun. 10, 2021, granted, now 11,365,688, issued on Jun. 21, 2022.
Claims priority of application No. 102020000019171 (IT), filed on Aug. 4, 2020.
Prior Publication US 2024/0044292 A1, Feb. 8, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. F02C 7/36 (2006.01); F01D 25/18 (2006.01)
CPC F02C 7/36 (2013.01) [F01D 25/18 (2013.01); F05D 2220/32 (2013.01); F05D 2260/40311 (2013.01); F05D 2260/98 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A turbomachine engine comprising:
a fan assembly disposed radially within a fan case, wherein the fan assembly comprises a plurality of fan blades, and wherein a diameter of the fan blades is 72-216 inches;
a core engine including a low-pressure turbine;
a vane assembly including a plurality of vanes, wherein the vanes are disposed aft of the fan blades and are coupled to the core engine and the fan case; and
a gearbox coupled to the low-pressure turbine and the fan assembly, wherein the gearbox comprises a gear ratio within a range of 4.1-11.0 and a gearbox oil flow rate at an inlet of the gearbox within a range of 5-25 gallons per minute at a max takeoff condition.