Monitoring device for positive/ shearing stress of bonding interface of solid rocket engine

Abstract

The invention relates to a monitoring device for the positive / shearing stress of the bonding interface of a solid rocket engine. The monitoring device comprises sensors, a data acquisition instrumentand an upper PC (Personal Computer), wherein the sensor is provided with at most eight sensors on the monitoring section of each bonding interface of the solid rocket engine; an included angle between two adjacent sensors is 45 degrees; an interval bewteen the monitoring sections of the straight barrel section of the soil rocket engine is 30-50cm; the artificial debonding layer opening positionsof the front end socket and the rear end socket of the solid rocket engine are independently provided with a monitoring section; the middle positions of the front end socket and the rear end socket ofthe solid rocket engine are independently provided with a monitoring section; the data acquisition instrument is attached to the surface of a solid engine shell; and the sensors, the data acquisitioninstrument and the upper PC are connected through a conductor or a communication module. The monitoring device is embedded in the solid engine straight barrel section in a distributed way, a plurality of monitoring sections are arranged on the end socket sections, the stress monitoring of grains and heat insulating layer splicing interfaces on a plurality of positions can be realized, and the stress field distribution situation of the bonding interface is obtained.

Description

technical field [0001] The invention relates to a monitoring device, in particular to a monitoring device for the normal / shear stress of the bonding interface of a solid rocket motor. Background technique [0002] The solid engine will be affected by various factors such as transportation load, gravity, and overturning during service, and the stress at the bonding interface between the grain and the thermal insulation layer will change accordingly. When the stress at the bonding interface is greater than that of the interface or Material strength, debonding occurs at the interface. The debonding defect of the bonding interface of solid motors accounts for about 1 / 3 of the faults of solid motors, which seriously affects the use and life of solid motors. Therefore, monitoring technology is used to monitor the stress at the bonding interface. Evaluation and other work is very necessary. [0003] Solid engines are long-term storage and special industrial products for one-time ...

AI Technical Summary

Problems solved by technology

[0007] The invention provides a monitoring device for the positive / shear stress of the bonding interface of a solid rocket motor to solve the problem of monitoring the debonding of the bonding interface of a solid rocket motor

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