Geared gas turbine engine
A gas turbine and engine technology, applied in the direction of gear transmission, transmission, belt/chain/gear, etc., can solve the problems of aircraft performance impact, engine not suitable for installation under the wing, etc.
Pending Publication Date: 2020-06-30
ROLLS ROYCE PLC
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
If parts of an engine are scaled - simply zooming in on a known engine type - the added drag could negatively affect the performance of the aircraft the engine is mounted on
Additionally or alternatively, the engine may not fit under the wing of the aircraft unless sized
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0430] figure 1 A 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 gearbox 30 .
[0431] In use, the core gas stream A is accelerated and compressed by the low pressure compressor 14 and directed into the high pressure compressor 15 for further compression. T...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| radius | aaaaa | aaaaa |
| length | aaaaa | aaaaa |
| radius | aaaaa | aaaaa |
Login to View More
Abstract
The title of the invention is 'Geared Gas Turbine Engine'. The present disclosure provides a gas turbine engine (10) for an aircraft, the gas turbine engine comprising: an engine core (11) comprisinga turbine (19), a compressor (14), and a mandrel (26) connecting the turbine to the compressor; a fan (23) located upstream of the engine core (11), the fan comprising a plurality of fan blades (64) extending from a hub (66); and a gearbox (30) receiving an input from the mandrel (26) and outputting a drive to the fan (23) so as to drive the fan at a lower rotational speed than the mandrel. The gas turbine engine (10) has an engine length (110) and a gearbox position (112) relative to a front region of the fan (23), and the gearbox position ratio is: gearbox position / engine length in the rangeof 0.19 to 0.45.
Description
technical field [0001] The present disclosure relates to gas turbine engines for aircraft, and more particularly, to gas turbine engines having specified relative component dimensions. Background technique [0002] The skilled artisan will appreciate that simply scaling up components of a known engine type may not provide a corresponding scaling of power / thrust and / or efficiency, and may introduce issues such as increased drag or difficulty of installation. Therefore, it may be appropriate to reconsider the engine parameters. [0003] For example, the skilled artisan will appreciate that if the overall size of a gas turbine engine is increased, one problem that may need to be addressed is how to reduce the overall drag generated by the correspondingly larger nacelle of the larger engine in use. If parts of an engine are scaled—simply zooming in on a known engine type—the added drag could negatively affect the performance of the vehicle the engine is mounted on. Additionall...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): F02K3/06F02C7/36F04D29/38F04D29/02
CPCF02C7/36F02K3/06F04D29/023F04D29/388F05D2220/36F02K3/068F05D2250/80F05D2260/40311Y02T50/60F01D5/141F05D2220/3212F05D2220/323F05D2240/307F05D2250/71F05D2300/173F16H1/28
Inventor 理查德·G·斯特雷顿迈克尔·C·威尔莫特
Owner ROLLS ROYCE PLC