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Turbomachine comprising a trap for foreign bodies circulating in an airflow

A technology of turbines and collectors, applied in gas turbine installations, machines/engines, mechanical equipment, etc., can solve problems such as circumferential imbalance of airflow

Active Publication Date: 2018-07-17
SAFRAN AIRCRAFT ENGINES SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such disturbances may, for example, create circumferential imbalances in the airflow in the air section

Method used

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  • Turbomachine comprising a trap for foreign bodies circulating in an airflow
  • Turbomachine comprising a trap for foreign bodies circulating in an airflow
  • Turbomachine comprising a trap for foreign bodies circulating in an airflow

Examples

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Embodiment Construction

[0029] figure 2 An upstream part AM of a turbine 24 for an aircraft according to the invention is shown. The turbine 24 is the same as the prior art and in figure 1 Its downstream portion AV shown in includes at least one unenclosed propeller 14a, here two such propellers 14a. The turbine 24 also includes a nacelle 26 defining an air inlet 28, a central hub 30, an annular air inlet section 32 surrounding the central hub 30 and leading to a main air supply section 34 supplying a gas generator (not shown).

[0030] from figure 2 As can be seen in the figure, the central hub 30 is provided with a collector 36, here a recess forming a hole 38 in the central hub 30, which can receive foreign objects or FOD.

[0031] For example, such FODs may damage the turbine 24 as they strike internal components such as compressor blades at full speed.

[0032] exist figure 2 In , the path followed by the FOD is shown by the central arrow 40 and the path followed by the air for feeding t...

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Abstract

The invention relates to a turbomachine (24) of "open rotor" or turboprop type, comprising a nacelle (26) defining an air inlet (28), a central hub (30) and an annular air intake duct (32) surroundingthe central hub (30) and opening into a main air supply duct (34), the central hub (30) comprising a central trap (36) having an opening (38) for trapping foreign bodies in an airflow entering the turbomachine (24), and an air recovery path (48) having an opening (48a), via which the air recovery path (48) opens into the main duct (34), and situated on the central hub (30).

Description

technical field [0001] The present invention relates to turbines or turboprops of the "open rotor" type, and more particularly to collectors for foreign bodies of such turbines. Background technique [0002] A turbine, in particular a turbine for an aircraft, comprises a main air circuit which makes it possible to guide the air captured by the air intake through the gas generator to generate the thrust necessary for the movement of the aircraft. [0003] The air entering the turbine may contain foreign objects, also known as FOD ("foreign object damage"), objects that can damage the internal components of the turbine. [0004] Among these objects, mention can be made of sand, birds of small size or water that quickly turns to ice at high altitudes. [0005] In order to prevent this risk, it is necessary to limit the amount of FOD entering the gas generator, or at least reduce its velocity, and thus reduce its impact load when it hits the internal elements of the turbine. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C6/20F02C7/052F02C7/055B64D33/02
CPCF02C6/206F02C7/052F02C7/055B64D2033/022B64D2033/0246B64D2033/0293F05D2220/325F05D2260/607B64D33/02Y02T50/60
Inventor 罗曼·让-克劳德·费里尔罗密欧·布罗尼亚杰基·雷蒙德·朱利恩·普鲁托尼古拉斯·约瑟夫·西尔文
Owner SAFRAN AIRCRAFT ENGINES SAS
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