Impulse generator for measuring combustion instability of solid rocket engine

Abstract

The invention relates to an impulse generator for measuring combustion instability of a solid rocket engine, and belongs to the technical field of solid rocket engines. According to the impulse generator for measuring the combustion instability of the solid rocket engine, a design mode of adjusting pulse size by dose, timing sequence controlled by a propulsive agent and impulse sources integratedwith the propulsive agent to be placed in a T-shaped combustor is adopted, when the impulse generator charges, the impulse sources are integrated with the propulsive agent, the timing sequence of pulsed excitation can be controlled through the dose of the propulsive agent, lighting is carried out directly through the propulsive agent when the excitation needs to be applied, and an extra ignition timing sequence control device is not required. The impulse sources with different amounts and different positions can be added by the impulse generator, the pulsed excitation with different requirements is realized, and simpler, safer and more reliable are achieved. The pulser for measuring the combustion instability of the solid rocket engine is easy to operate, has the low cost, and has a good effect.

Description

technical field [0001] The invention relates to a pulse generator for measuring the combustion instability of a solid rocket motor, in particular to a pulse generator used for measuring the unstable combustion pressure coupling response function of a solid rocket motor through a T-shaped burner, which belongs to the solid rocket motor The field of engine technology. Background technique [0002] With the development of space launch vehicle technology, especially the increasing demand for high-thrust rocket motors, many launch vehicles have adopted solid rocket motors with large aspect ratio, high loading, and high-energy propellants. The common feature of this type of engine is that it is easy to generate flow instability in the flow field, and the combustion stability of the engine continues to deteriorate with the working time, and unstable combustion is very prone to occur at the end of the work. Solid rocket motor unstable combustion, also known as combustion instabilit...

AI Technical Summary

Problems solved by technology

[0005] At present, the existing pulse generators that work with T-shaped burners are mainly external pulse trigger excitation devices, which have problems such as complex systems, cumbersome operations, and low reliability.

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