A space-use solid cold gas generator gas producing agent grain column fixing structure

Abstract

The utility model relates to a fixing structure of a gas-generating agent grain of a solid cold gas generator for space, comprising: a cross-wave axial buffering support ring and a radial buffering fixing arm. The cross-wave axial buffer support ring is composed of multi-layer wave springs, one end of the cross-wave axial buffer support ring is fixedly connected to the top of the radial buffer fixed arm, and the other end of the cross-wave axial buffer support ring is against the igniter; the radial The buffer fixing arm is used to clamp the powder column in the shell of the solid cold air generator, so that the powder column is located under the igniter; the radial buffer fixing arm is supported between the outer wall of the powder column and the inner wall of the solid cold air generator shell , so that the grain column and the shell of the solid cold air generator are not in contact with each other, and the gap between the grain column and the shell of the solid cold air generator is used for guiding gas. It has been verified by experiments that the gas generating agent adopting the fixed structure of the present invention does not have the problem of gas generating agent breakage. The fixed structure of the solid cold gas generating agent that is resistant to mechanical vibration has been successfully applied in orbit, and the orbit control has been successfully completed.

Description

technical field [0001] The invention relates to a solid cold gas generator gas generating agent powder column fixing structure for space, and belongs to the field of propulsion technology. Background technique [0002] In order to meet the rapid response and reduce the cost of the satellite development process, the satellite is developing towards modularization, which requires the space propulsion system to be able to plug and play, reduce the assembly coupling cycle, and reduce the filling cycle of the base. For traditional chemical propulsion systems and cold air propulsion systems, Pressurization with high-pressure nitrogen cannot realize the pre-packaging and plug-and-play propulsion system, but the use of solid cold air generators can solve the problem of pre-packaging and plug-and-play. [0003] In CN 1103921956 B "Solid Cold Air Micro Propulsion System", Zhu Peng et al. of Nanjing University of Science and Technology proposed a solid cold air generator structure, as s...

AI Technical Summary

Problems solved by technology

At the same time, due to the relatively low heat released by the reaction of the gas generating agent, under the condition of heat transfer blockage, only convective heat transfer is not enough to achieve self-sustained combustion, so the gas generating agent cannot be maintained within the working temperature range, causing flameout failure , resulting in insufficient gas production

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