Explosion isolation device for pyrotechnics used in satellite antenna deployment mechanism

Abstract

The invention provides an initiating explosive device shock isolating device used for a satellite antenna unfolding mechanism. The initiating explosive device shock isolating device comprises a cover plate, a limiting framework, a bottom plate, an energy-absorption buffer unit, an adapter bracket and a heat insulating mat; the bottom plate, the limiting framework and the adapter bracket are sequentially connected; the energy-absorption buffer unit is embedded into a mounting space defined by the cover plate, the limiting framework and the bottom plate; the cover plate is blocked between the energy-absorption buffer unit and the limiting framework; the heat insulating mat is connected to the bottom surface of the adapter bracket; the cover plate is connected to an initiating explosive device pressing base of the satellite antenna unfolding mechanism; and the adapter bracket is connected to a start body structure. According to the initiating explosive device shock isolating device provided by the invention, usage environment requirements of the satellite antenna unfolding mechanism are sufficiently taken into consideration, and topological optimization and parameter optimization design are carried out on design of the integral structure and designs of parts, so that the initiating explosive device shock isolating device has the advantages of enough mounting rigidity, excellent shock isolation, light weight, a simple structure, and low manufacturing and assembly cost.

Description

technical field [0001] The invention relates to a shock isolation device for pyrotechnics, in particular to a shock isolation device for explosives used in a satellite antenna deployment mechanism. Background technique [0002] With the development of my country's satellites in the direction of high precision, high stability, and long life, the sensitive loads carried by satellites have higher and higher requirements for the shock and vibration environment of satellite structural platforms. [0003] The satellite antenna is generally deployed in orbit by unlocking with pyrotechnics. The unlocking process of pyrotechnics produces a certain impact on the star structure, which adversely affects the normal operation of sensitive stand-alone machines near the unlocking point. At present, the commonly used impact isolation devices on the planet are one-way impact isolation devices. Generally, airbags, rubber, metal rubber or honeycomb panels are used as impact isolation energy-ab...

AI Technical Summary

Problems solved by technology

The unlocking process of pyrotechnics produces a certain impact on the star structure, which adversely affects the normal operation of sensitive stand-alone machines near the unlocking point

At present, the shock isolation device commonly used on the planet is a one-way shock isolation device. Generally, airbags, rubber, metal rubber or honeycomb panels are used as shock isolation energy-absorbing materials. The shock isolation direction is single, and it cannot provide sufficient connection stiffness.

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