A composite honeycomb sandwich structure panel with a super-large single-curved reflective surface and its forming method

Abstract

The invention provides a composite honeycomb sandwich structure for an oversized high-precision single-curved reflection panel. The composite honeycomb sandwich structure comprises three layers of hard aluminum plates, two layers of aluminum honeycomb cores and a sectional material framework for connecting and supporting. A total realization process comprises determination of a panel partitioningscheme, splicing of the three layers of hard aluminum plates, determination of a slotting scheme, calculation of shielding, unfolding of the panel, calculation of nailing height, positioning of the three layers of hard aluminum plates, the panel and the sectional material framework on a high-precision nailing bed, production of a working plate solid mold, pre-stretching and molding of the sectional material framework, notching of the honeycomb cores, adjustment of the nailing bed, layer-by-layer pavement of the sandwich structure and cementing and formation under vacuum negative pressure. Thecomposite honeycomb sandwich structure is applied to engineering, and the formation rigidity and profile precision stability of the oversized high-precision single-curved reflection panel can be effectively improved; a production target of an oversized and single-curvature high-precision, large-rigidity and light-weight reflection panel applicable to a column surface near field is realized.

Description

Technical field: [0001] The invention proposes a composite honeycomb sandwich structure panel for a super-large-size single-curvature high-precision panel, in particular to a composite honeycomb sandwich structure panel for a cylindrical near-field super-large-size high-precision panel, which belongs to the field of mechanical engineering. Background technique: [0002] The near-field is the necessary equipment to realize the RCS measurement of the full-scale target characteristics. With the rapid development of satellite communication technology, aerospace stealth and anti-stealth technology, the demand and performance requirements for the large near-field are getting higher and higher. The reflective surface is used as a construction The foundation and key of large-scale near-field is constantly developing towards a larger area and higher precision, while improving the structural rigidity and surface accuracy stability of the ultra-large single-curvature reflective panel th...

AI Technical Summary

Problems solved by technology

[0011] This application mainly solves the problems in the manufacture of high-precision reflective panels of composite sandwich structure panels and the pre-forming and positioning of profile skeletons. From the perspective of engineering applications, it is hoped that fewer profile skeletons can be used, and the position and quantity of profile skeletons can be optimized and adjusted. Improving the stiffness of super-sized single-curvature high-precision reflective panels

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