A sealed cabin body of an integral wall plate type spacecraft

Abstract

The invention belongs to the technical field of aerospace and aviation, and relates to a spacecraft airtight cabin body, in particular to an integral wall plate type spacecraft airtight cabin cabin body. Including front frame, front cone section, front connection frame, first column section, first middle frame, second column section, second middle frame, third column section, third middle frame, fourth column section, rear connection frame and a sealed ball bottom; the invention is the first integral wall plate type spacecraft airtight cabin body applied to a long-term on-orbit spacecraft in China, which fills a gap in my country's aerospace technology. Compared with the semi-monocoque airtight cabin structure, the structural parts are reduced by more than 50%, and 90% of the welds are automatically welded, which reduces manual operations, effectively controls the welding quality, and ensures the reliability of the structure.

Description

technical field [0001] The invention belongs to the technical field of aerospace and aviation, and relates to a sealed cabin body of a spacecraft, in particular to a sealed cabin body of an integral wall plate type spacecraft. Background technique [0002] The airtight cabin of a spacecraft refers to the cabin section that needs to maintain a certain pressure in the cabin for the needs of the astronauts or instruments and equipment in the cabin. The airtight cabin not only bears and transmits the launch load and possible aerodynamic load, but also bears a certain internal pressure environment. The main function of the airtight cabin structure is to maintain the airtight state of the cabin and bear the load. At present, there are several structural forms of the sealed cabin of spacecraft at home and abroad: [0003] 1. Hard shell structure. The cabin body is welded by the skin and the end frame, without any form of reinforcement on the skin. This kind of structure has sim...

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Problems solved by technology

The disadvantage of this structural form is that as the size of the cabin increases, the number of structural assembly units increases, and the welding assembly process is complicated. Secondly, the reinforcement ribs are welded to the skin, and there are tens of thousands of welding points, which are prone to welding defects. For long-term On-orbit airtight cabins, once stress corrosion occurs in the spot welding parts, the on-orbit reliability of the cabin will be greatly reduced

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