US 11,053,860 B2
Compact accessory systems for a gas turbine engine
Shawn Alstad, Peoria, AZ (US); Tomasz Dobosz, Tempe, AZ (US); and Rocio Chavez, Baja California (MX)
Assigned to HONEYWELL INTERNATIONAL INC., Charlotte, NC (US)
Filed by HONEYWELL INTERNATIONAL INC., Morris Plains, NJ (US)
Filed on Apr. 21, 2020, as Appl. No. 16/854,485.
Application 16/854,485 is a continuation of application No. 15/014,097, filed on Feb. 3, 2016, granted, now 10,662,878.
Prior Publication US 2020/0263610 A1, Aug. 20, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. F02C 7/32 (2006.01); B64C 27/14 (2006.01); B64D 41/00 (2006.01); F16H 1/22 (2006.01)
CPC F02C 7/32 (2013.01) [B64C 27/14 (2013.01); B64D 41/00 (2013.01); F16H 1/222 (2013.01); F05D 2260/4031 (2013.01); Y02T 50/40 (2013.01); Y02T 50/60 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An accessory system for a gas turbine engine having a driveshaft and an axis of rotation, the accessory system comprising:
a towershaft coupled to the driveshaft and driven by the driveshaft along a towershaft axis of rotation transverse to the axis of rotation of the gas turbine engine, the towershaft including a towershaft bevel gear at a distal end;
a shaft including a first shaft bevel gear coupled to the towershaft bevel gear, the shaft rotatable by the towershaft along a shaft axis of rotation, the shaft axis of rotation transverse to the towershaft axis of rotation and substantially parallel to the axis of rotation of the gas turbine engine, the shaft including a first coupling portion, a second coupling portion and defining an air-oil separator, the first coupling portion including the first shaft bevel gear and a first enlarged portion, the second coupling portion including a second enlarged portion, the first enlarged portion and the second enlarged portion each having a diameter greater than a remainder of the shaft, the air-oil separator including a first plurality of bores defined through the shaft between the first enlarged portion and the second enlarged portion, the shaft defining an inner channel in communication with the first plurality of bores and a second plurality of bores defined through the shaft between the first shaft bevel gear and an end of the shaft to bleed air separated by the air-oil separator;
a first accessory driveshaft having a first accessory bevel gear driven by the shaft; and
a second accessory driveshaft having a second accessory bevel gear driven by the shaft.