A typical damage repair process of engine reverse thrust grille

A damage repair and engine technology, applied in the field of aircraft maintenance, to achieve the effect of expanding the scope of repair, clearing technical blind spots, and reducing maintenance costs

Active Publication Date: 2020-12-22
中国南方航空股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in fact, there are only two repairs for the grille, REPAIR 027 and REPAIR 028, and they have strong limitations

Method used

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  • A typical damage repair process of engine reverse thrust grille
  • A typical damage repair process of engine reverse thrust grille
  • A typical damage repair process of engine reverse thrust grille

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A typical damage repair process for an engine reverse thrust grille, comprising the following steps:

[0043] 1) Determine the typical damage types of the engine thrust reverser grille, including hyperboloid edge aperture damage and metal guide vane damage;

[0044] 2) For hyperboloid edge aperture damage, the repair methods include:

[0045] 2.1 The shape of the grid is kept in the grid near the hyperbolic edge aperture damage area. Set a separation film (not shown in the figure), and set a filler 1 (filler part number) in the separation film (part number of the separation film QZ5111). EC3524 B / A), such as figure 2 shown;

[0046] 2.2 Repair of the outer surface of the grid For the hyperboloid edge aperture damage area 2 Repair from the outer surface, such as image 3 As shown, the slope is firstly polished, and after the grinding is completed, the carbon fiber prepreg 3 is laid layer by layer from the outer surface of the hole damage area to the slope to form a f...

Embodiment 2

[0057] A typical damage repair process for an engine reverse thrust grille, comprising the following steps:

[0058] 1) Determine the typical damage types of the engine thrust reverser grille, including hyperboloid edge aperture damage and metal guide vane damage;

[0059] 2) For hyperboloid edge aperture damage, the repair methods include:

[0060] 2.1 The shape of the grid is kept in the grid near the hyperbolic edge aperture damage area, and the blue high-temperature separation tape is set in the grid, and the filling glue is set in the tape, such as figure 2 shown;

[0061] The blue tape is AIRIECH:Flashbreaker 1R, and the filling glue is EC3524 B / A.

[0062] The method of using blue tape and structural filling glue can ensure the strength of the filling structure and effectively prevent secondary damage to the original structure.

[0063] 2.2 The repair of the outer surface of the grille is repaired from the outer surface of the hyperboloid edge aperture damage area, ...

Embodiment 3

[0077] A typical damage repair process for an engine reverse thrust grille, comprising the following steps:

[0078] 1) It is determined that the typical damage type of the engine reverse thrust grid is the hyperboloid edge aperture damage;

[0079] 2) For hyperboloid edge aperture damage, the repair methods include:

[0080] 2.1 The shape of the grid is kept in the grid near the hyperbolic edge aperture damage area, and the blue high-temperature separation tape is set in the grid, and the filling glue is set in the tape, such as figure 2 shown;

[0081] The blue tape is AIRIECH:Flashbreaker 1R, and the filling glue is EC3524 B / A.

[0082] The method of using blue tape and structural filling glue can ensure the strength of the filling structure and effectively prevent secondary damage to the original structure.

[0083] 2.2 The repair of the outer surface of the grille is repaired from the outer surface of the hyperboloid edge aperture damage area, such as image 3 As sho...

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PUM

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Abstract

The invention discloses an engine reverse-pushing grating typical damage repairing technology. The engine reverse-pushing grating typical damage repairing technology comprises the following steps that(1), the type of engine reverse-pushing grating typical damage is determined; (2), a maintaining mode for double-curved-surface edge hole diameter damage comprises the steps of 2.1 grating appearancekeeping, 2.2 grating outer surface repairing and 2.3 grating inner surface repairing; and (3), a maintaining mode for metal flow guiding blade damage comprises the steps that 3.1, a metal flow guiding blade which is partially damaged is selected, and the damaged part is removed; 3.2 the grating appearance outline is drawn through three-dimensional scanning, and the metal joint appearance is designed according to the grating appearance outline; and 3.3, a metal joint is manufactured by adopting numerical control machining, and the damaged metal flow guiding blade is strengthened through the metal joint. According to the repairing technology, the engine reverse-pushing grating typical damage can be repaired.

Description

technical field [0001] The invention belongs to the technical field of aircraft maintenance, and in particular relates to a typical damage repair process of an engine reverse thrust grille. Background technique [0002] Due to the huge force on the reverse thrust of the engine, the reverse thrust airflow driven by the fan when the aircraft is on the ground is likely to cause foreign object erosion damage to the reverse thrust grille. After a long period of use, the engine reverse thrust grille (such as figure 1 shown) are prone to damage, while thrust reverser grilles are expensive to repair and the repair cycle can seriously affect the operation of the entire fleet. Research on the repair technology of reverse thrust grille of V2500 engine can not only reduce the maintenance cost, but also guarantee the maintenance quality. [0003] The grille is an important part of the thrust reverser components of the engine. It plays the role of making the air flow reversely ejected at...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C73/02B23P6/00
CPCB23P6/00B23P2700/01B29C73/02
Inventor 张小波王荣巍高赛胡洋嘉
Owner 中国南方航空股份有限公司
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