A method for repairing aircraft pressurized cockpit skin

A skin and cockpit technology, applied in aircraft maintenance, fuselage bulkheads, etc., can solve the problems of reducing the fatigue strength of rivet connections, impact, and the difficulty of regular inspection and maintenance work, so as to facilitate the detection of abnormal signs

CN106143945BActive Publication Date: 2018-12-14SHAANXI AIRCRAFT CORPORATION
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2018-12-14

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Abstract

The invention provides an airplane pressurized cabin skin repairing method. The method is characterized by including the following steps that firstly, a reinforcing cushion plate is manufactured and provided with lugs connected with a long purlin in a matched manner; secondly, rivets connecting the the damaged position of the long purlin with a skin are decomposed; thirdly, an interlayer sealing material is laid on the region of the damage position; fourthly, the reinforcing cushion plate is placed on the interlayer sealing material between the skin and the long purlin; fifthly, installation holes are drilled in the positions, corresponding to rivet holes in the long purlin, in the reinforcing cushion plate, the positions of the lugs are included, and the reinforcing cushion plate, the interlayer sealing material, the skin and the long purlin are riveted into a whole; and sixthly, the rivets are coated with sealing glue.
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Description

technical field

[0001] The invention relates to a method for repairing aircraft skin damage. Background technique

[0002] Aircraft skins are exposed components that are susceptible to damage from foreign objects. At present, the general method for repairing aircraft pressurized cockpit skin damage is the external patch method. The method is to make a rectangular patch according to the size of the skin damage, chamfer the periphery of the patch, install the patch on the outer surface of the skin, and use a 90° countersunk Rivets are riveted to the skin. The shortcoming of existing method is: (1) patch is installed on the outside of fuselage skin shape, and aircraft aerodynamic shape is caused certain influence, especially in the front fuselage part (I grade aerodynamic zone), and the negative impact brought especially Obviously; (2) The damaged skin is sandwiched between the aircraft interior trim panel / insulation layer and the patch, which will make the regular inspection...

Examples

Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with accompanying drawing and specific embodiment: a kind of specific form of aircraft pressurization cockpit skin repair method is as follows Figure 1 ~ Figure 3 shown. When repairing the pressurized cockpit skin of an aircraft in this method of use, first decompose the rivets 4 of the stringers 5 adjacent to the damaged skin 6, clean the inner surface of the damaged skin 6, lay the interlayer sealing material 2, and repair the damaged skin 6. A reinforcing backing plate 1 is placed on the inner surface of the skin, then riveted, and a sealant 3 is applied.

[0022] Reinforced backing plate is being made, according to figure 1 Make the reinforced backing plate 1 and set lugs, the grade of the reinforced backing plate material is LY12, heat treatment and yellow anodizing treatment after forming, and apply primer; Along the axial direction of the stringer 5, an extension section with the sa...