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Architecture for a non-lubricated turboshaft engine

A turbine engine and turbine shaft technology, applied in the direction of engine lubrication, turbine/propulsion device lubrication, engine components, etc., can solve problems such as expensive, polluting, and heavy lubrication systems

Active Publication Date: 2013-05-22
TURBOMECA SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Finally, lubrication systems are heavy, expensive and often polluting

Method used

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  • Architecture for a non-lubricated turboshaft engine
  • Architecture for a non-lubricated turboshaft engine
  • Architecture for a non-lubricated turboshaft engine

Examples

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Embodiment Construction

[0039] FIG. 1 is a longitudinal cross-sectional view of a prior art helicopter turboshaft engine 10 . The turboshaft engine 10 includes a casing 12 that houses a gas generator 14 . The gas generator has a gas generator shaft 15 which carries a compressor wheel 16 and a high pressure turbine 18 . Fresh air enters the turboshaft engine through air inlet 20 . The fresh air is then compressed by the compressor 16 before being fed into the combustion chamber 22 where the compressed air is mixed with fuel. Combustion of the mixture of compressed air and fuel produces airflow F that drives rotation of high pressure turbine 18 , which in turn drives compressor 16 . The gas generator is carried by bearings P1 and P2 which provide rotational guidance and absorb the forces experienced by the gas generator 15 . These bearings are lubricated with oil by means of a lubrication system (not shown in the figures). In addition, the turboshaft engine also has a free turbine 24 with a low pre...

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PUM

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Abstract

The invention relates to a turbine engine (100) for a helicopter (200), said helicopter comprising a main gearbox, a rotor (204), and a speed-reducing device (206) that is placed entirely within the main gearbox (202) of the helicopter while being connected to said rotor, the turbine engine including a casing (102), a gas generator (114) having a gas generator shaft (115), and a free turbine (124) to be rotated by the gas flow generated by the gas generator, said free turbine comprising a free turbine shaft (128). According to the turbine engine of the invention, when the casing of the turbine engine is attached to the body of the helicopter, the free turbine shaft axially extends inside the main gearbox of the helicopter so as to be directly connected to the speed-reducing device.

Description

technical field [0001] The present invention relates to the field of gas turbines, and in particular to the field of turboshaft engines for aircraft such as helicopters. [0002] The present invention particularly relates to a turboshaft engine, particularly for use in helicopters, having a gas generator and a free turbine driven in rotation by the gas flow generated by the gas generator. Background technique [0003] Generally speaking, the gas generator includes at least one compressor and a turbine, which are coupled together for rotation. The principle of operation is as follows: the fresh air entering the engine is compressed due to the rotation of the compressor, after which it is sent to the combustion chamber, where the compressed air is mixed with fuel. Then, the burnt gas produced by the combustion is discharged at a high speed. [0004] The first expansion then takes place in the turbine of the gas generator, during which the turbine draws the energy required to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D25/22F02C3/10F02C7/06F02C7/36B64C27/12
CPCF05D2240/51Y02T50/671F05D2220/76B64C27/12F01D25/22F05D2240/54F02C7/36F05D2220/329F05D2240/52F02C7/06F02C3/103Y02T50/60
Inventor 奥利维尔·百德瑞恩杰拉德·巴蒂
Owner TURBOMECA SA
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