Light-weight high-strength helicopter tail door structure

A high-strength, helicopter technology, applied in the direction of aircraft doors, fuselage, aircraft accessories, etc., can solve the problems of reducing the effective load and heavy weight, and achieve the effect of weight reduction, light weight and high strength

Active Publication Date: 2019-10-22
JIANGXI CHANGHE AVIATION IND
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the present invention provides a light-weight and high-strength helicopter tailgate structure, combined with composite materials as the main load-bearing structure, which solves the defects of excessive weight and reduced effective load in the prior art

Method used

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  • Light-weight high-strength helicopter tail door structure
  • Light-weight high-strength helicopter tail door structure

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Embodiment Construction

[0019] see figure 1 , the helicopter tailgate structure is mainly composed of floor 1, bottom skin 4 and composite material stiffened plate 5, see figure 2 , wherein the floor 1 is composed of an upper panel 7 , a honeycomb interlayer 8 and a lower panel 9 . The composite stiffened plate 5 is a plate with a rib structure. According to installation requirements, an installation angle material 2, an installation corner box 3 and an installation web 6 are riveted around the composite material stiffened plate 5 as an interface for installation with the fuselage. The bottom skin 4 covers the outermost side.

[0020] For the composite material stiffened plate 5, its rib structure is composed of the concave-convex structure of the plate itself, and the extending direction of the rib structure is longitudinal, and symmetrically distributed on the left and right sides of the fuselage symmetry axis, as the main load-bearing structure instead of the traditional machine-added frame be...

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Abstract

The invention relates to a light-weight high-strength helicopter tail door structure, and belongs to the field of lightweight design of helicopter structures. A traditional tail door is of a metal frame beam structure, the labor amount is large, and a large weight cost is required to pay for meeting the design required strength. The invention provides the light-weight high-strength helicopter taildoor structure. The structure is mainly composed of an inner layer floor, an outer layer bottom skin and a middle layer composite material stiffened plate; and the composite material stiffened plateis a plate with rib structures, each rib structure is composed of a concave-convex structure of the plate, the extending directions of the rib structures are longitudinal, and the rib structures are symmetrically distributed on the left and right of a symmetry axis of a helicopter body. The light-weight high-strength helicopter tail door structure can meet the stiffness and strength requirement ofdesigning to pass oversize vehicles while the weight is reduced by 20%, and the structure has the characteristics of being light in weight and high in strength.

Description

technical field [0001] The invention relates to a light-weight and high-strength helicopter tailgate structure, which belongs to the field of lightweight design of helicopter structures. Background technique [0002] The tailgate of the transport helicopter needs to be used as a transport channel, and the structural weight is the lightest under the premise of meeting the strength requirements. Lightweight design is very important in the structural design of helicopters, and the reduction of body weight can bring huge economic benefits. [0003] The traditional tailgate is a metal frame beam structure, which is formed by screwing and riveting numerous sheet metal webs, flanges, belt plates, and large machine beams on the tooling, which requires a lot of labor and labor intensity, and meets the design requirements The requirement for strength comes at a greater weight price. [0004] Composite materials have many advantages over metal materials. Applying composite materials ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C1/18B64C1/14B29C70/44
CPCB64C1/18B64C1/1407B29C70/44B64C2001/0072Y02T50/40
Inventor 梁伟汪心文胡文强彭文张俊邓健健
Owner JIANGXI CHANGHE AVIATION IND
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