Multi-time pulse excitation device

Abstract

The invention discloses a multi-time pulse excitation device. The multi-time pulse excitation device formed by connecting a plurality of explosive loading cabins with independent pulse functions in series, wherein each explosive loading cabin comprises an electric igniter, a one-way plug, a porous baffle, an explosive column and a shell, the explosive columns are arranged in the shells, one ends of the shells are fixedly connected with the porous baffles, the other ends of the shells are sealed by the one-way plugs, the explosive loading cabin of the first stage is connected with an engine through a nozzle replacing one one-way plug, the one-way plugs of the later stages are opposite to the porous baffles of the previous stages, the last-stage explosive loading cabin far away from the nozzle is sealed through an end cover replacing one porous baffle, the electric igniters ignite the explosive columns to generate gas, the one-way plugs move towards the nozzle under the action of the gasand are limited by the porous baffles of the previous stages, and the gas enters the engine through gaps between the outer circumferences of the one-way plugs and the inner walls of the shells and the porous baffles. According to the multi-time pulse excitation device, multi-time pulse excitation can be formed.

Description

technical field [0001] The invention relates to the technical field of solid motors, in particular to a multiple pulse excitation device. Background technique [0002] During the working process of the solid engine, under certain external excitation conditions, part of the energy generated by the solid propellant combustion is coupled with the sound field, resulting in irregular and periodic pressure oscillations, causing the engine to deviate from the design state, and even the pressure surge causes the engine to disintegrate. The irregular oscillation and continuous development process caused by combustion is called unstable combustion, which is one of the important basic technical problems restricting the development of solid motors. [0003] There are many motivating factors in the working process of solid engines. For example, the accumulation of propellant combustion products and the intermittent removal of the nozzle can cause pressure disturbances, and the instantane...

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Problems solved by technology

[0003] There are many motivating factors in the working process of solid engines. For example, the accumulation of propellant combustion products and the intermittent removal of the nozzle can cause pressure disturbances, and the instantaneous flight overload of missiles can also cause pressure disturbances. Various motivating factors are not stable in the engine itself. Unstable combustion problems will be induced in the case of

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