Waterproof and drainage device for wing and engine hanging butt joint based on 3D printing

Abstract

The invention belongs to the field of aeronautical manufacturing, and relates to a waterproof and drainage device for a wing and an engine hanging butt joint based on 3D printing. The device comprises a drainage groove 1 and a waterproof rubber strip 2, wherein the drainage channel 1 is mounted on the side of the wing leading edge skin 3 and at the intersecting line position of the wing leading edge skin 3 and an engine hanger, and the drainage channel 1 is divided into a drainage section 101, a water diversion section 102, a leading-out section 103 and a fixed section 104; the drainage section 101 is located in a transverse area of an intersecting line, the water diversion section 102 is located in a longitudinal area, the leading-out section 103 is a leading-out pipe 11 led out from the tail end of the water diversion section 102, a water tank 8 is arranged on the drainage section 101, and a water diversion hole 10 communicated with the water tank at one end and a drainage pipe at the other end is formed in the water diversion section 102. The water tank 8 is used for receiving and collecting leaked water of the wing leading edge skin 3 and the engine hanging butt seam, guiding the leaked water to the water guide hole 10 and finally enabling the leaked water to flow out of the guide-out pipe 11; the waterproof rubber strip 2 is installed on the motor hanging side and the intersecting line position of the wing leading edge skin 3 and the engine hanging and used for sealing the butt joint of the wing leading edge skin 3 and the engine hanging under the normal condition.

Description

technical field [0001] The invention belongs to the field of aviation manufacturing, and relates to a 3D printing-based waterproof and drainage device for the joint between a wing and an engine suspension. Background technique [0002] For a propeller aircraft with a wing suspension, the upper surface of the engine suspension extends to the shape of the leading edge of the wing, and there is no mechanical connection between the two large parts, and there will inevitably be deformation inconsistencies during flight, resulting in inability to separate the separation surfaces. Achieving a seal. The waterproof and drainage design of the existing aircraft here is mainly based on waterproofing. A circle of rubber profiles is arranged on the edge of the engine suspension along the intersecting line with the shape of the leading edge of the wing, and the waterproof and pneumatic sealing is realized through the extrusion of the rubber profiles. [0003] During the actual flight, the...

AI Technical Summary

Problems solved by technology

[0003] During the actual flight process, the gap between the separation surfaces may be large, exceeding the compensation range of the rubber profile through extrusion deformation, resulting in seal failure, and water will still leak into the interior of the aircraft structure from the gap between the bonding surfaces

There are many electrical, fuel, hydraulic and other system equipment and pipelines inside the engine suspension. Many equipment may cause electrical short circuit, material corrosion and other problems that affect flight safety due to water droplets.

[0004] Based on the above considerations, if only waterproofing is considered, the existing rubber and other sealing materials may not fully meet the design requirements

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