Inflatable unfolding semi-rigid sealed cabin adopting compressible multi-layer sandwich protective layer

Abstract

The invention discloses an inflatable unfolding semi-rigid sealed cabin adopting a compressible multi-layer sandwich protective layer, and belongs to the technical field of spacecraft structures. The sealed cabin comprises a sealed pressure-bearing inner bag, a space environment protection layer, an auxiliary unfolding multi-stage sleeve and two rigid sealing heads, the sealing head edges of the two rigid sealing heads are connected with the sealed pressure-bearing inner bag and the space environment protection layer, the centers of the two rigid sealing heads are connected with the auxiliary unfolding multi-stage sleeve, and the sealed pressure-bearing inner bag is arranged in the space environment protection layer. The sealed cabin is composed of rigid multi-layer sandwich modules, the modules are connected through flexible strips and are folded in an overlapping mode, and the problems that the inflatable cabin is difficult to fold due to the fact that the cabin wall is too thick, the unfolding friction force after folding is large, the unfolding control difficulty is large, and material folding damage is likely to be caused are solved. The rigid multi-layer sandwich module can be further compressed after being folded, the compression rate is high, the folding size of the sealed cabin can be further reduced, and the problem that a thick-wall inflatable cabin is large in size after being folded is solved.

Description

technical field [0001] The invention belongs to the technical field of spacecraft structures, and in particular relates to an inflatable and unfolded semi-rigid airtight capsule adopting a compressible multi-layer sandwich protective layer. Background technique [0002] The aerospace engineering construction of space stations, lunar bases, etc. has an urgent demand for large-sized airtight cabins such as manned cabins and storage cabins. The current airtight cabins mainly have two structural forms: rigid metal airtight cabins and inflatable expandable airtight cabins (inflatable cabins). But there are some shortcomings. [0003] Rigid metal manned airtight capsule is currently the most commonly used airtight cabin structure in space stations, but there are still some defects such as heavy mass, large launch volume, high launch cost, difficult assembly in orbit, and small living space, which cannot meet the needs of future manned spaceflight projects. The need for large size...

AI Technical Summary

Problems solved by technology

In order to improve the space environment protection ability of the inflatable airtight cabin, especially the space debris protection ability, the bulkhead of the inflatable cabin often adopts a multi-layer thick-walled structure, which will cause the inflatable cabin to be difficult to fold, and the volume is large after folding, which is easy to cause material damage. Problems such as folding damage, high friction when unfolding, difficulty in unfolding, and difficulty in unfolding control

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