Power takeoff transmission
AssigneeUnited Technologies Corporation
InventorGary D. Roberge
Life of this patent
Estimating the term…
Abstract
A power takeoff and gearbox system of a multi-spool gas turbine engine includes a high rotor towershaft operably connected to and driven by a first spool of the gas turbine engine, a first gearbox operably connected to the high rotor towershaft, a low rotor towershaft operably connected to and driven by a second spool of the gas turbine engine, and a second gearbox operably connected to the low rotor towershaft. The high rotor towershaft is located at a first case of the gas turbine engine and the low rotor towershaft is located at a second case of the gas turbine engine axially forward of the first case.
Claims20
A power takeoff and gearbox system of a multi-spool gas turbine engine, comprising:
- a high rotor towershaft operably connected to and driven by a first spool of the gas turbine engine;
- a first gearbox operably connected to the high rotor towershaft;
- a low rotor towershaft operably connected to and driven by a second spool of the gas turbine engine;
- and
- a second gearbox operably connected to the low rotor towershaft;
- wherein the high rotor towershaft is disposed at a first case of the gas turbine engine and the low rotor towershaft is disposed at a second case of the gas turbine engine axially forward of the first case.
A gas turbine engine, comprising:
- a high speed spool;
- a low speed spool;
- and
- a power takeoff and gearbox system comprising:
- a high rotor towershaft operably connected to and driven by the high speed spool of the gas turbine engine;
- a first gearbox operably connected to the high rotor towershaft;
- a low rotor towershaft operably connected to and driven by the low speed spool of the gas turbine engine;
- and
- a second gearbox operably connected to the low rotor towershaft;
- wherein the high rotor towershaft is disposed at a first case of the gas turbine engine and the low rotor towershaft is disposed at a second case of the gas turbine engine axially forward of the first case.
An aircraft comprising:
- an airframe;
- a first engine disposed at the airframe;
- and
- a second engine disposed at the airframe;
- each engine of the first engine and the second engine including:
- a power takeoff and gearbox system including:
- a high rotor towershaft operably connected to and driven by the high speed spool of the gas turbine engine;
- a first gearbox operably connected to the high rotor towershaft;
- and
- a low rotor towershaft operably connected to and driven by the low speed spool of the gas turbine engine;
- wherein the high rotor towershaft is disposed at a first case of the gas turbine engine and the low rotor towershaft is disposed at a second case of the gas turbine engine axially forward of the first case;
- wherein each low rotor towershaft extends to a power combining gearbox disposed between the first engine and the second engine.
Dependencies are inferred from the claim text.