Clamping block type stage separation structure of aircraft

Abstract

The invention relates to a clamping block type stage separation structure of an aircraft, and belongs to the technical field of aircraft separation. The stage separation structure comprises an upper casing, a lower casing, clamping blocks and separation bolts; the upper casing comprises an upper boss located on the outer wall of the upper casing; the top surface of the upper boss is an inclined surface which is inclined downwards; the lower casing comprises a lower boss located on the outer wall of the lower casing; the bottom surface of the lower boss is an inclined surface which is inclinedupwards; grooves fitting the top surface of the upper boss and the bottom surface of the lower boss are formed in the inner sides of the clamping blocks; and the separation bolts sequentially penetrate through the upper casing and the lower casing to be in threaded connection with the clamping blocks. The grooves fitting the top surface of the upper boss and the bottom surface of the lower boss are formed in the inner sides of the clamping blocks of the stage separation structure, the radial force of the separation bolts can be converted into the axial force for connecting the lower casing andthe upper casing through adjustment of the matching angles of the grooves and the top surface of the upper boss and the matching angles of the grooves and the bottom surface of the lower boss, and the radial force can be converted into multiple times of the axial force, so that the bearing capacity of every single separation bolt is improved, the number of the separation bolts can be reduced, theseparation impact can be reduced, and the separation reliability can be improved.

Description

technical field [0001] The present application relates to the technical field of aircraft separation, in particular to an aircraft clip-type inter-stage separation structure. Background technique [0002] The connection and separation technology of aircraft is an important research content in the aerospace field. In order to reduce the negative mass, usually after the work of each stage of missile / rocket is completed, the unnecessary mass is thrown away by means of inter-stage separation. Therefore, inter-stage separation is a key sequence in the flight process of missile / rocket, which directly affects the flight test success or failure. [0003] Traditional separation methods are mainly divided into two types, namely point separation and line separation. Among them, the point-type separation device includes explosive bolts, separation nuts, unlocking bolts, etc. Line separation mainly includes cutting cables, expansion tubes, shaped explosive cables, etc. [0004] Howev...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of this application provides an aircraft clip-type inter-stage separation structure to solve the problem of increasing the number of connection points or increasing the length of the cable in the traditional separation method in the related art , will lead to the problem of degraded separation reliability

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