A kind of manufacturing method of impact-resistant carbon fiber composite material machine head cover

Abstract

The invention discloses a method for manufacturing a nose cover of an impact-resistant carbon fiber composite material. The nose cover produced by the method includes a cone head and a cone body, and the cone body includes a cone outer panel, a cone foam, and a cone inner panel; The manufacturing method is realized through the following steps: ① and ② extrude and mold the cone head through an extruder; and the cone outer panel; ③ cut the cone foam into 4 pieces and perform heat setting; Oxygen resin manufactures the inner panel of the cone through the RTM process; ⑤The cone head in step ①, the cone foam in step ③, the outer panel of the cone in step ② and the inner panel of the cone in step ④ are glued and formed by autoclave; The beneficial effects of the invention are: the composite material nose cover provided by the invention has good impact resistance, good strength and rigidity and light weight.

Description

technical field [0001] The invention relates to a structural design of a composite material, in particular to a method for manufacturing a nose cover of an impact-resistant carbon fiber composite material. Background technique [0002] Aircraft weight reduction has been an important task for the aviation industry for many years. Due to its strong designability, high specific strength, high specific stiffness, and excellent corrosion resistance and fatigue resistance, composite materials have rapidly improved their application level in aircraft structures. [0003] However, at present, carbon fiber reinforced epoxy resin is generally used in aircraft, which has the problem of poor impact resistance, and its application range is limited to a certain extent. [0004] The traditional aircraft nose cover is made of metal materials, which has the disadvantages of cumbersome riveting process and heavy weight. Therefore, patent CN201711228249.8 proposes a manufacturing technology o...

AI Technical Summary

Problems solved by technology

[0003] However, at present, carbon fiber reinforced epoxy resin is generally used in aircraft, which has the problem of poor impact strength, and its application range is limited to a certain extent.

[0004] The traditional aircraft nose cover is made of metal materials, which has the disadvantages of cumbersome riveting process and heavy weight. Therefore, patent CN201711228249.8 proposes a manufacturing technology of thin-walled radome with PMI foam sandwich, but the panel in this patent is relatively heavy. It is thin and does not propose a reasonable impact modification, so it is easy to be hit by runway stones during actual flight and cause cracks, which cannot well meet the actual application requirements.

Patent CN201210326901.0 proposes a PMI foam core material and its preparation method, but also does not mention the modification of the panel material, nor can it meet the use requirements of the nose cover

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