A Pyrotechnic Actuator Using Low Detonation Velocity Charges to Reduce Incidental Impact and Contamination

Abstract

The invention discloses a pyrotechnic actuator which adopts low detonation velocity charge to reduce incidental impact and pollution, including short-circuit sleeve, insulating sleeve, sealant, electric ignition head, reinforcing ring, tube shell, driving charge, gasket, Seal ring, piston. Wherein the electric ignition head is composed of an electrode plug, an ignition powder, a bridge wire and two wires. The ignition powder is lead trinitroresorcinol or other weak priming powders and pyrotechnic powders. The driving charge is a low detonation velocity, low-power propellant, which can be a granular foam explosive based on Hexogen or Taian, or a modified black powder, or a boron / potassium nitrate ignition powder, or ether An-based PBXN301 mixed explosives, etc. Replacing part or all of the pyrotechnic agents in traditional pyrotechnic actuators with low-power ones can reduce the incidental impact and pollution when pyrotechnic actuators work, thereby improving the reliability of fuzes, ammunition and spacecraft, and is also beneficial to all Matching products improve intrinsic safety.

Description

technical field [0001] The invention belongs to the technology of pyrotechnics, and in particular relates to a pyrotechnic actuator which adopts a low detonation velocity charge to reduce incidental impact and pollution. Background technique [0002] Pyrotechnic actuators, including pyrotechnic pushers and pyrotechnic pin pullers commonly used in ammunition and fuzes, use a small amount of propellant and explosives as energy, apply the principle of single-stroke internal combustion engines, and realize electrical-mechanical signal control conversion. Because of its small size, light weight, large specific energy (energy / mass), mature technology, and reliable performance, it is widely used. [0003] The pyrotechnic separation device used to realize separation, release and deployment control in the spacecraft, including the piston-type thruster (also known as the stroke actuator), has the same technical essence as the above-mentioned pyrotechnic actuator, just to achieve more ...

AI Technical Summary

Problems solved by technology

When it is working, it will produce a large impact and harmful gas leakage, and form excess and pollutants, resulting in deformation or destruction of its application products such as fuzes, ammunition and the internal structure of spacecraft, and damage to adjacent parts, components and subsystems have the potential to adversely affect or directly cause failure

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