A return capsule buffer shell filled with phase change material

Abstract

The invention discloses a return cabin buffer shell filled with phase-change materials, which comprises a first shell, a second shell, and a cavity between the first shell and the second shell for filling the first phase-change material and metal foam chamber; the second shell is connected to the outer wall of the return cabin. When the metal foam is filled, a cylindrical space is reserved for installing the mechanical buffer assembly; the mechanical buffer assembly includes a cylindrical outer wall, a spring made of a second phase change material located inside the outer wall and a shape memory alloy, and the gap in the metal foam is filled The first phase change material, the first phase change material and the second phase change material gradually absorb heat and melt into a liquid phase fluid after reaching a set temperature. After the memory alloy reaches the deformation temperature, it will be deformed and elongated to become a buffer spring. The return cabin buffer shell of the present invention can provide thermal buffer for the return cabin, and can also provide mechanical buffer for the return cabin.

Description

technical field [0001] The invention belongs to the technical field of phase-change energy storage materials, and in particular relates to a return cabin buffer shell filled with phase-change materials. Background technique [0002] The return capsule carries astronauts and a large number of precision test instruments, and the successful recovery of the return capsule is a crucial link in the manned spaceflight project. There are two technical difficulties for the return capsule to land safely. One is that when the return capsule enters the atmosphere, the highest temperature of the oncoming airflow is about 1000 to 1200 degrees. The outermost layer of the return capsule must not only resist this high temperature, but also ensure that the aluminum alloy shell inside and the environment in which the astronauts live are at a suitable temperature to prevent the equipment from being burned out and prevent the astronauts from feeling particularly hot and uncomfortable. Comforta...

AI Technical Summary

Problems solved by technology

When the return capsule lands at such a high landing speed, it will have a great impact at the moment of landing, which will have a great impact on the astronauts and equipment in the cabin.

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