Real-time regression detection system and method for solid rocket propellant burning surface

Abstract

The invention provides a real-time regression detection system and method for a solid rocket propellant burning surface. The real-time regression detection system comprises a signal generation unit used for generating an ultrasonic signal serving as an original pulse signal, a pre-amplification unit used for amplifying the ultrasonic signal, a nondestructive detection unit in contact with the housing of a solid rocket engine, a post-amplification unit used for amplifying a transmission signal, a signal conditioning unit used for converting the transmission signal into a digital signal, and a processing control unit used for processing the digital signal to obtain displacement of the propellant burning surface and the burning rate of a propellant and controlling the signal generation unit, the pre-amplification unit, the nondestructive detection unit, the post-amplification unit and the signal conditioning unit to work, wherein the nondestructive detection unit comprises a plurality of ultrasonic transducer groups arranged at certain intervals, and each ultrasonic transducer group is provided with a transmitting transducer for transmitting the amplified ultrasonic signal and a receiving transducer for receiving the transmission signal penetrating the housing.

Description

technical field [0001] The invention belongs to the field of propellant testing of solid rocket motors, in particular to a real-time detection system for the retreat of the burning surface of the solid rocket propellant and a method for determining the displacement of the burning surface of the propellant in real time and dynamically obtaining the burning speed of the propellant. Background technique [0002] Solid rocket motor is a rocket power device using solid propellant. It has the advantages of simple structure, good maneuverability, high reliability and easy maintenance. It is more and more widely used in rocket weapon systems and plays a huge role in the aerospace field. role. [0003] The reliability of solid rocket motor combustion will directly affect the safety of the entire rocket system. Therefore, it is necessary to use reliable nondestructive testing methods to measure the combustion state of the fuel and the retreat of the combustion surface in real time. B...

AI Technical Summary

Problems solved by technology

Since the effective information used in this method is reflected waves, it is easily affected by the unevenness of the burning surface, and the measurement error is large

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