Wall thickness measuring device and method for solid rocket engine composite shell

Abstract

The invention discloses a wall thickness measuring device and method for a solid rocket engine composite shell. a shell positioning column and a dial indicator mounting column which are axially and vertically parallel are installed on a device base, a tray is locked at any position of the shell positioning column through screws, a measuring positioning head is installed at the top end of the shellpositioning column, and a dial indicator is installed on the top of the dial indicator mounting column through a support. Before measurement, the dial indicator is in contact with the positioning head for zeroing, the measured engine shell is placed on the tray during measurement, the measured cross section of the engine shell is determined by adjusting the up-down position of the tray, and wallthickness data of the measured cross section is obtained by rotating the engine shell. The measuring device is suitable for continuously measuring the axial and circumferential wall thicknesses of theengine composite shell with a large length-diameter ratio and a hard heat insulation composite material, can accurately judge whether the wall thicknesses of different sections of the engine composite shell meet the variable wall thickness design requirement or not, quantitatively evaluates the forming quality of a heat insulation layer, effectively identifies and separates defective products andensures the working reliability of delivered products.

Description

technical field [0001] The invention relates to a device and method for measuring the wall thickness of a composite shell of a solid rocket motor, in particular to an axial and circumferential wall thickness of a solid rocket motor composite shell made of hard heat-insulating composite material with a large length-to-diameter ratio cylindrical structure and a variable wall thickness design. The continuous measurement device and method of the invention belong to the field of measurement technology. Background technique [0002] The shell of a certain series of solid rocket motors is a thin-walled and slender tubular structure, which is composed of a metal shell and a non-metallic thermal insulation layer. The metal shell is formed by special high-strength steel through strong spinning, and the non-metallic thermal It is the matrix, and the high-silica glass cloth tape is the reinforcing material, which is formed after being wound and pressurized and heat-cured. The maximum d...

AI Technical Summary

Problems solved by technology

[0005] The technical problem of the present invention is: to overcome the deficiencies of the prior art, to provide a device and method for measuring the wall thickness of a solid rocket motor composite casing, and to solve the problem of a hard heat-insulating composite material with a cylindrical structure with a large aspect ratio and a variable wall thickness design. Problems of Continuous Measurement of Axial and Circumferential Wall Thickness of Engine Housing

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