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Hybridization of the fibres of the fibrous reinforcement of a blade

A technology of fiber reinforcement and blades, which is applied to the supporting elements of blades, components of pumping devices for elastic fluids, liquid fuel engines, etc., and can solve the problems of reduced ability of blades to resist impact

Active Publication Date: 2021-06-15
SAFRAN AIRCRAFT ENGINES SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, under the law of equal material and equal stacking, the ability of the blade to resist impact will be reduced accordingly

Method used

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  • Hybridization of the fibres of the fibrous reinforcement of a blade
  • Hybridization of the fibres of the fibrous reinforcement of a blade
  • Hybridization of the fibres of the fibrous reinforcement of a blade

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Embodiment Construction

[0031] In the present application, upstream and downstream are defined with respect to the normal flow direction of the gas in the fan 1 through the gas turbine engine. Furthermore, the axis of rotation of the fan 1 is referred to as the axis X of radial symmetry of the fan 1 . The axial direction corresponds to the direction of the axis X of the fan 1 , and the radial direction is a direction perpendicular to and passing through this axis. Finally, inner and outer, respectively, will be used with respect to the radial direction, so that an inner part or face of an element is closer to the axis X than an outer part or face of the same element.

[0032] A gas turbine engine fan 1 comprises a fan disc 2 carrying a plurality of fan blades 3 of the fan 1 associated with inter-blade platforms.

[0033] Each blade 3 comprises a composite material structure comprising a fiber reinforcement 5 obtained by three-dimensional weaving and a matrix in which the fiber reinforcement 5 is emb...

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Abstract

The invention relates to a blade (3) of a fan (1) of a turbomachine having a structure made of a composite material comprising a fibrous reinforcement (5) obtained by three-dimensional weaving and a matrix in which the fibrous reinforcement (5) is embedded, the fibrous reinforcement (5) comprising first strands (9) having a predetermined elongation at break, a portion of the fibrous reinforcement (5) further comprising second strands (10) having an elongation at break higher than that of the first strands (9).

Description

technical field [0001] The present invention relates generally to the field of gas turbine engines, and more particularly to the field of fan blades for these gas turbine engines and methods of manufacture thereof. [0002] The invention is particularly applicable to fan blades made of composite material and their interaction with the inlet of the main duct. Background technique [0003] Gas turbine engine blades, especially fan blades, are subject to high mechanical and thermal stress and must meet stringent weight and space requirements. Therefore, it has been proposed to use blades made of composite materials comprising a fiber reinforcement densified with a polymer matrix, such blades are lighter than metal blades with equivalent propulsion characteristics and have satisfactory heat resistance sex. [0004] During the certification and service life of the engine, the fan blades are subjected to bird and hail ingestion. However, depending on the type of object hitting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/88B29C70/24B64C11/20D03D25/00F01D5/28B29L31/08B29D99/00
CPCB64C11/20F01D5/282B29C70/24B29C70/887B29D99/0025B29L2031/082D03D25/005F01D21/045F05D2220/36F05D2300/6034F05D2300/6031D10B2505/02Y02T50/60D03D15/283D03D15/56D03D15/275B29K2277/10B29K2307/04B29K2995/0046D10B2401/061F02C7/00F04D29/388F05B2280/6003
Inventor 托马斯·阿兰·德·盖拉德吉勒斯·皮埃尔-玛丽·诺塔里安弗雷德里克·简-伯纳德·普扎杜
Owner SAFRAN AIRCRAFT ENGINES SAS