Manufacturing method of all-composite case of rocket engine

Abstract

The invention discloses a manufacturing method of an all-composite case of a rocket engine. The manufacturing method comprises the following steps: 1) manufacturing joints; 2) manufacturing a core mold middle section; 3) manufacturing a skirt; 4) manufacturing a heat insulation core mold: manufacturing a rubber layer on the end face, close to the core mold, of each joint manufactured in the step 1), then installing the joints and seal head rubber layers at the two ends of the core mold, and finally, laying a heat insulation layer on the surface of the core mold middle section, manufactured inthe step 2), by employing a laying process, and performing vacuumizing and pre-compacting after heat insulation layer laying to obtain the heat insulation core mold; (5) performing fiber winding: winding carbon fiber yarns impregnated with resin around the heat insulation core mold by cooperating spiral inclined winding with hoop winding, wherein a glue solution on the surface of a winding layer needs to be scraped off in the winding process; after fiber winding is finished, making the skirt manufactured in the step 3) sleeve the two ends of the core mold wound with the fibers, and performinghoop winding after fixation is completed; 6) curing; and 7) demolding. The manufacturing method has the characteristics of that the weight reduction effect is obvious, the reliability is high, the cost is low and the bursting pressure is high.

Description

technical field [0001] The invention relates to a rocket motor, in particular to a rocket motor shell. Background technique [0002] Composite materials have the characteristics of high specific strength, high specific modulus, dimensional stability, and strong designability. They have become one of the most important aerospace structural materials after aluminum alloys, titanium alloys, and steel, and have been widely used in the aerospace field. . [0003] With the rapid development of the aerospace industry, the weight of structural devices is more stringent. Lightweight and high-strength composite materials are of great significance for reducing the weight of the engine, improving the performance of the aircraft, and reducing the launch cost. [0004] In the 1960s, composite material engine casings were used in American rocket engines. Subsequently, various countries have carried out a lot of research work on it. At present, most rocket engines use carbon fiber wound e...

AI Technical Summary

Problems solved by technology

[0004] In the 1960s, composite material engine casings were used in American rocket engines. Subsequently, various countries have carried out a lot of research work on it. At present, most rocket engines use carbon fiber wound epoxy resin composite materials, but the flange Metal materials are still used for joints and other parts, so there is room for further improvement in weight reduction

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