Rocket solid propellant burning velocity testing system

Abstract

A rocket solid propellant combustion speed test system relates to test equipment technology field. It enhances the test precision and test efficiency of the solid propellant combustion speed, achieves the management of the test date and data self-disposal to complete the automatization of the test process. It adopts the computer technology based on the existing technology. The system relates to firebox, signal collection equipment, gas way, waterway, temperature adjust equipment and designed system control equipment. The system control equipment relates to computer, control soft and control box made up of valve control drive circuit and ignition circuit. Signal collection equipment gets test signal from the firebox and magnifies it to carry to system control equipment. The computer deals with the data and sends control signal to the valve controlled by the valve control drive circuit and ignition circuit to switch on, interdict or ignite the solid propellant drug bar. It is mainly used for the rocket solid propellant combustion speed test.

Description

technical field [0001] The invention relates to the technical field of test instruments, in particular to a rocket solid propellant burning rate test system, which can be used for measuring the rocket solid propellant burning rate by underwater acoustic emission method and target line method. Background technique [0002] The current test method for the acoustic emission burning rate of rocket solid propellant in China began in the 1980s, while the target line test method for rocket solid propellant was earlier. For details, see "Research on High-Pressure Burning Velocity Acoustic Emission Test Technology" published by Xu Zairong in "Solid Rocket Technology" in 1997 and "The Burning Velocity test". Due to the narrow measurement range of the acoustic signal produced by propellant combustion, large errors in data processing methods, and low test accuracy, etc. In particular, it is difficult to obtain accurate test results for medicinal strips whose burning rate is greater th...

AI Technical Summary

Problems solved by technology

Due to the narrow measurement range of the acoustic signal generated by propellant combustion, large errors in data processing methods, and low test accuracy, etc.

Especially for the drug strips whose burning rate is greater than 27mm / s and less than 4mm / s, it is difficult to obtain accurate test results, some formulations cannot obtain the burning rate pressure index and the test system has a low degree of automation

The valves that control the combustion chamber inlet and outlet, inlet and outlet, and pressure adjustment are all manual valves, with low control accuracy

The existing equipment uses an electric stopwatch for timing, which has a long measurement cycle and low precision, and the labor intensity of the measurement personnel is high

Signal acquisition uses image recorders, digital counters and other equipment to record acoustic emission signals, which not only has large errors, but also brings inconvenience to subsequent data statistics and processing

In the data processing method, the traditional data processing method adopts the single-point average calculation method in the calculation of the temperature sensitivity coefficient and the pressure index curve, which leads to a large error introduced in the calculation

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