Modular rigid ceramic tile assembly

Abstract

The invention discloses a modular rigid ceramic tile assembly. The ceramic tile assembly comprises a single ceramic tile prefabricated body and a fixing structure used for integrating the single ceramic tile prefabricated body. In the invention, the single ceramic tile prefabricated body is integrated on the fixed structure so that standardized and modular assembly of the ceramic tile prefabricated body is realized, and meanwhile, an expansion platform is provided for realizing environmental parameter measurement; a ceramic tile is installed on a metal bottom plate, and a strain isolation padis arranged between the ceramic tile and the metal bottom plate, serves as a transition layer between the ceramic tile and the metal bottom plate and is used for releasing dependent variables, causedby different linear expansion coefficients, of the two materials; hole sites of the metal bottom plate are in one-to-one alignment with the positioning holes in edges of ring frame corners of a metalframework; and fixing insertion pieces are used for fixing, fixing rods of the fixing insertion pieces are inserted into the corresponding hole sites and the corresponding positioning holes, the connecting holes in the fixing insertion pieces are further fixedly connected with the metal framework through fastening screws, a fixing effect of the fixing insertion pieces is achieved, and a falling risk of the ceramic tile is reduced.

Description

technical field [0001] The present disclosure generally relates to the technical field of aircraft structural defense and heat insulation, and specifically relates to a modular rigid ceramic tile assembly. Background technique [0002] Rigid ceramic tiles were used for the first time on the windward side of the space shuttle, which separated the problems of heat protection and heat insulation. The rigid ceramic tiles used by the space shuttle solved the problems of quality, thermal expansion, connection and sealing that could not be solved by metal thermal protection at that time, but there were problems such as brittleness, water absorption and high maintenance costs. From the 1980s to the present, enhanced, heat-resistant, and durable upgraded ceramic tiles have been continuously released and applied to space shuttles and later hypersonic vehicles, but these upgrades mainly focus on the improvement of material properties. For rigid ceramic tiles The assembly process, main...

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Problems solved by technology

[0003] Specifically, in terms of assembly technology, take rigid heat-insulating tiles (ceramic tiles for space shuttle) as an example, the existing ceramic heat-resistant tile solutions without exception require a large number of ceramic tiles to be bonded to the surface of the aircraft, and need to be based on the aircraft The topological optimization design of the outer surface, each ceramic tile cannot be enlarged due to the constraints of material properties and machinability, so it has formed a huge assembly workload of tens of thousands of heat-resistant tiles to form a heat-resistant insulation layer

The assembly of a large number of parts can lead to process stability problems, which in turn increases the risk of falling off

[0004] In terms of quick replacement, at the beginning of the design of the space shuttle, it was ideally believed that the ground repair time between two launches would only take 1 to 2 weeks. The interval is extended to at least 2 months. The installation of traditional ceramic tiles is limited by the pasting form and cannot meet the needs of rapid deployment, rapid response, and short launch intervals of future spacecraft.

[0005] In terms of fault location, since the ceramic tiles are directly pasted on the surface of the cabin skin, if the temperature sensor inside the cabin encounters abnormal data, it can only locate the fault to a general area, and cannot further increase the resolution fineness, let alone directly locate a certain piece of ceramic watts, resulting in extremely low maintenance efficiency

[0006] In terms of environmental perception, traditional ceramic tiles only play a role in preventing heat insulation. The aircraft is equipped with temperature sensors in some key parts to monitor the internal temperature. The internal wiring is complicated, which limits the fineness of the temperature collection of the whole arrow

[0007] Therefore, we propose a modular rigid ceramic tile assembly to solve the problem of the large number of rigid ceramic tiles assembled, easy to fall off, unable to meet the rapid deployment of future spacecraft, imprecise fault location, low maintenance efficiency, and affecting the fineness of the temperature collection of the whole arrow. degree of question

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