Solid engine adhesion interface loaded state monitoring device

Abstract

The invention discloses a solid engine adhesion interface loaded state monitoring device, which comprises stress-temperature sensors arranged on the inner wall of a solid engine, a stress transmitter which is arranged outside the solid engine and connected with the stress-temperature sensor by means of lead wires, and a data acquisition device and an excitation power supply which are connected with the stress transmitter. Different from the prior art, the solid engine adhesion interface loaded state monitoring device is characterized that the number of the stress-temperature sensors is nine, the stress-temperature sensors are of a plane membrane cylindrical structure, the diameter of each sensor is less than or equal to phi 15 mm, the thickness thereof is less than or equal to 3 mm, the lead wires are insulated flat connecting lines with a width of 3 mm and a thickness of about 0.1 mm; and the solid engine adhesion interface loaded state monitoring device is embedded in a thermal insulation layer / lining interface of a solid rocket engine. Compared with the prior art, the solid engine adhesion interface loaded state monitoring device is easy to install, does not affect a powder charge stress field, has high precision and stability, and can monitor the required data information comprehensively, has low influence on strength property, storage property and operating property of an engine adhesion interface after being embedded, and does not cause destructive impact on the structure of the engine.

Description

technical field [0001] The invention relates to the technical field of detection of rocket solid motors, in particular to a monitoring and detection device for the loading state of the bonding interface of the solid motor. Background technique [0002] Due to its simple structure, convenient use and maintenance, high reliability, stable storage performance, high mobility and good economy, solid rocket motors are the most popular among the more than 100 kinds of missiles currently in service and under development in various countries. Accounted for more than 80%. After more than 40 years of development, most of the first-stage or second-stage engines of the missiles currently in service in my country use them as propulsion power devices. Because solid rocket motors are stored for a long time and used once, the industrial sector has uniformly given its storage and service life when delivering solid rocket motors to troops. However, in the actual use of the army, due to the d...

AI Technical Summary

Problems solved by technology

So far, embedded sensors have only been used in simulated monitoring and detection engines, and have not been used in real-installed engines; all chemical properties of propellants are still obtained by dissecting the engine and taking out the charge for testing.

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