A low-impact separation and unlocking mechanism in space

Abstract

The invention discloses a low-impact separation and unlocking mechanism in space, comprising a box body, a locking assembly, an unlocking assembly and a moving assembly. The box body is a hollow box body structure. The locking assembly and the unlocking assembly are installed in the inner space of the box body and move. The component passes through the square hole on the bottom of the square box, and is locked by the locking component through the square hole. In the storage state, 3 sets of independent composite aromatic wheel ropes lock the locking components, and realize the locking of the moving components through the square holes on the bottom of the square box. The downward movement trend of the square hole on the bottom. After the carbon fiber filament is heated through the connector, the composite aromatic wheel rope is fused at the binding position of the carbon fiber filament, and the left and right connecting rods rotate under the action of the torsion spring and the torsion spring, and the moving components are unlocked. Move down along the square hole to realize the separation and unlocking function.

Description

technical field [0001] The invention belongs to the field of space structure unlocking, in particular to a space low-impact separation and unlocking mechanism. Background technique [0002] With the development of aerospace technology, more and more spacecraft require a variety of connection and separation mechanisms to achieve space connection and unlocking functions. At present, there are mainly pyrotechnic device unlocking, shape memory alloy unlocking and hot knife unlocking methods for space unlocking. Based on the characteristics of several separate unlocking methods, the advantages and disadvantages of each other are analyzed and compared: [0003] (1) Pyrotechnic release. The pyrotechnic device is the earliest and most commonly used unlocking and separation device on spacecraft. At present, a variety of products have been standardized and serialized, so they can be selected and used according to different needs. The working principle of the pyrotechnic device is t...

AI Technical Summary

Problems solved by technology

Using the recovery generated by its temperature change and thickening, the unlocking and separation of space devices can be realized. The separation device based on SMA is simple in principle, reusable, low in cost, has little impact on the platform, and does not generate harmful gases during operation. Therefore, shape memory alloys The unlocking method has been used on a variety of spacecraft in recent years, but it is more sensitive to the ambient temperature, the recovery start temperature is low, and the reliability of the unlocking process is not high in a temperature-controlled environment.

Easy to cause accidental unlocking

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