Gas turbine engine with pylon mounted accessory drive

Patent metadata

Field	Value
Publication number	US-9719428-B2
Application number	US-94784207-A
Country	US
Kind code	B2
Filing date	Nov 30, 2007
Priority date	Nov 30, 2007
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

A gas turbine engine includes an accessory gearbox within an engine pylon. The accessory components may be mounted within the engine pylon to save weight and space within the core nacelle as well as provide a relatively lower temperature operating environment.

First claim

What is claimed is:

1. An engine pylon assembly for a gas turbine engine comprising:
an engine pylon;
an accessory gearbox mounted within said engine pylon, said accessory gearbox including a geartrain, said accessory gearbox positioned aft of a fan nacelle of said gas turbine engine; and
a multiple of accessory components mounted to said accessory gearbox, each of said multiple of accessory components driven by said geartrain; and
at least one towershaft extending from said accessory gearbox through said engine pylon at a non-perpendicular angle relative to an engine axis of rotation.

2. The assembly as recited in claim 1 , wherein said multiple of accessory components includes a starter/generator.

3. The assembly as recited in claim 1 , wherein said multiple of accessory components includes a deoiler.

4. The assembly as recited in claim 1 , wherein said multiple of accessory components includes a hydraulic pump.

5. The assembly as recited in claim 1 , wherein said multiple of accessory components includes a fuel pump.

6. The assembly as recited in claim 1 , wherein said multiple of accessory components includes a generator.

7. The assembly as recited in claim 2 , wherein said multiple of accessory components includes a deoiler.

8. The assembly as recited in claim 7 , wherein said multiple of accessory components includes a hydraulic pump.

9. The assembly as recited in claim 8 , wherein said multiple of accessory components includes a fuel pump.

10. The assembly as recited in claim 9 , wherein said multiple of accessory components includes a generator.

11. A gas turbine engine system comprising:
a nacelle assembly including a core nacelle and a fan nacelle;
an engine pylon;
at least one towershaft driven by one of a low pressure spool and a high pressure spool, wherein said at least one towershaft extends at a non-perpendicular angle relative to an engine axis of rotation;
an accessory gearbox mounted within said engine pylon, said accessory gearbox driven by said at least one towershaft and including a first geartrain, said accessory gearbox positioned aft of said fan nacelle;
a multiple of accessory components mounted to said accessory gearbox, each of said multiple of accessory components driven by said first geartrain, said multiple of accessory components includes a starter/generator, a deoiler and a fuel pump mounted within said engine pylon;
a fan; and
a second geartrain, said low pressure spool driving said fan through said second geartrain.

12. The assembly as recited in claim 1 , wherein said multiple of accessory components includes a starter/generator, a deoiler and a fuel pump mounted within said engine pylon.

13. The gas turbine engine as recited in claim 11 , wherein said accessory gearbox is positioned aft of said fan nacelle relative to a normal operational attitude of the gas turbine engine.

14. The gas turbine engine as recited in claim 11 , wherein said at least one towershaft includes a first towershaft and a second towershaft, wherein the first towershaft is driven by the low pressure spool and the second towershaft is driven by the high pressure spool.

15. The assembly as recited in claim 1 , wherein said at least one towershaft includes a first towershaft and a second towershaft, wherein the first towershaft is driven by a low pressure spool of an engine and the second towershaft is driven by a high pressure spool of an engine.

Assignees

• Winter Michael
• United Technologies Corp

Inventors

• Winter Michael

Classifications

• F02K3/06

  with front fan · CPC title

• F05D2260/4031

  as in toothed gearing · CPC title

• F02C7/32 Primary

  Arrangement, mounting, or driving, of auxiliaries · CPC title

• Y02T50/671

  Cross-Sectional Technologies · mapped topic

• F02C7/36

  Power transmission arrangements between the different shafts of the gas turbine plant, or between the gas-turbine plant and the power user ({F02C3/107 - F02C3/13 and} F02C7/32 take precedence; couplings for transmitting rotation F16D; gearing in general F16H) · CPC title