Dimensional tooling and dimensioning method for large-size integrally formed heat-proof structure

Abstract

The invention relates to a shape-dimensional tool and a method for integrally forming a heat-proof structure with large size. The inner surface of the shape-dimensional tool is consistent with the aerodynamic profile of the heat-proof structure, and the profile accuracy is better than the aerodynamic shape of the heat-proof structure. Profile accuracy; there is at least one glue injection interface at the bottom of the dimensional tooling, and each glue injection interface is controlled by a valve to control the airtightness, and the upper outer contour of the dimensional tooling is provided with flanges. The method adopts the pneumatic outer shape surface dimension tool and the vacuum extraction and pressurization technology to realize the dimension dimension control of the integrally formed heat-proof structure product. The low-density, large-size integrally formed heat-proof structure product prepared by the invention has smooth inner and outer profile surfaces, and profile profile is better than 2 mm r.m.s, avoiding the occurrence of profile concave and convex defects, thereby ensuring product development quality.

Description

technical field [0001] The invention relates to a shape-dimensional tooling and a shape-dimensional method for a large-scale integrally formed heat-resistant structure, in particular to a shape-dimensional method for a large-scale integrally formed heat-resistant structure with a certain load-bearing performance using a low-density fiber three-dimensional structure as a reinforcing phase The invention belongs to the technical field of integral molding of an anti-heat insulation material for a reversible spacecraft. Background technique [0002] The outer surface of the returnable spacecraft must have a reliable, erosion-resistant thermal protection system to ensure the protection of the equipment and personnel inside the spacecraft. With the continuous development of deep space exploration technology, in view of the heat flow environment of the second space flight speed, it is required that the ablation layer on the surface of the thermal protection system cannot crack or fa...

AI Technical Summary

Problems solved by technology

[0004] The technical problem of the present invention is: to overcome the deficiencies of the prior art, to provide a dimension-dimensional tooling and a dimension-dimensional method for large-scale integrally formed heat-resistant structures, to solve the problem of easy deformation of the three-dimensional structure of low-density fibers, when large-scale integrally formed Dimensions cannot maintain shape

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