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Gearbox assembly

A technology of gearboxes and components, which is applied to gear transmissions, elements with teeth, belts/chains/gears, etc., can solve the problems of large total weight and occupying space for fan boxes, and achieve reduced size and weight, light weight Construction, the effect of reducing the length

Inactive Publication Date: 2020-08-11
ROLLS ROYCE PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The gear train and engine accessories can take up a lot of space outside the fan case and can also have a considerable overall weight

Method used

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  • Gearbox assembly
  • Gearbox assembly
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Embodiment Construction

[0077] Aspects and embodiments of the present disclosure will now be discussed with reference to the figures. Additional aspects and embodiments will be apparent to those skilled in the art.

[0078] figure 1A gas turbine engine 10 with a main axis of rotation 9 is shown. The engine 10 includes an air intake 12 and a propeller fan 23 that generates two airflows: a core airflow A and a bypass airflow B. The gas turbine engine 10 includes a core 11 receiving a core flow A. As shown in FIG. The engine core 11 includes a low-pressure compressor 14 , a high-pressure compressor 15 , a combustion device 16 , a high-pressure turbine 17 , a low-pressure turbine 19 and a core exhaust nozzle 20 in series in axial flow. A nacelle 21 surrounds the gas turbine engine 10 and defines a bypass duct 22 and a bypass exhaust nozzle 18 . The bypass gas flow B flows through the bypass duct 22 . The fan 23 is attached to and driven by the low pressure turbine 19 via a shaft 26 and an epicyclic ...

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Abstract

A gearbox assembly comprises: a gearbox having a plurality of gears, an air turbine starter, and a transfer shaft. The transfer shaft has a first end portion engaged with a gear of the gearbox and anopposing second end portion configured for operative connection with a core shaft of the turbine engine. The air turbine starter is operatively engaged with the transfer shaft between the first and second end portions so as to be rotatable by the air turbine starter.

Description

technical field [0001] The present disclosure relates to gearbox assemblies including engine accessories of gas turbine engines. Background technique [0002] Typically, the accessory gearbox of an aircraft gas turbine engine is mounted to the fan case of the turbine engine at a location below the engine. [0003] The gearbox is connected to the engine core by a radial drive shaft (ie, extending radially relative to an axially extending mandrel of the engine core). In some arrangements, depending on the location of the accessory gearbox, a transfer gearbox may connect the radial drive shaft to an axially extending transfer shaft, which may in turn connect to the accessory gearbox. [0004] The engine core powers (from the engine core) engine accessories mounted to the gearbox, such as an auxiliary generator and pumps for hydraulic fluid, fuel, oil, and the like. In addition to these accessories, turbo starters can also be mounted to accessory gearboxes. The turbine starte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/28F16H1/32F16H57/02F16H57/08F02C7/36
CPCF16H1/2854F16H1/32F16H57/02F16H57/08F02C7/36F16H2001/327F16H2057/02086F02C7/32F02C7/277F05D2220/323F05D2240/60F05D2260/40311
Inventor 大卫·L·艾伦
Owner ROLLS ROYCE PLC
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