A solid rocket motor segmented casing connection structure

By designing a solid rocket engine segmented shell connection structure, using components such as positioning keys, pads and positioning screws, the precise positioning and fixing of the shell segment is achieved, which solves the difficulties in loading and transportation of traditional rocket engines, and improves the connection reliability and sealing.

CN222702055UActive Publication Date: 2025-04-01JINXI IND GRP
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Patent Information

Application Number
CN202421074625.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-16
Publication Date
2025-04-01
Estimated Expiration
2034-05-16

AI Technical Summary

Technical Problem

Traditional monolithic rocket engines have difficulties in loading and transportation, and the reliability and sealing of the shell segmented connection are difficult to ensure, which limits the development of solid rocket engines.

Method used

A solid rocket engine segmented housing connection structure is designed, including the front housing section, the rear housing section, the positioning key, the pad and the positioning screw. The precise positioning and fixing of the housing section is achieved through the coordination of the positioning long hole, the positioning long groove, the locking screw hole and the annular positioning groove.

Benefits of technology

It improves the connection reliability of segmented solid engines, solves the difficulties in loading and transportation, and effectively controls the engine cost, which has important promotion and application value.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model discloses a segmented casing connection structure of a solid rocket engine, comprising a front casing segment, a rear casing segment, and a positioning key, a cushion block and a positioning screw for fixing the front casing segment and the rear casing segment; the front end of the rear casing segment is inserted into the rear end of the front casing segment, and the rear casing segment is axially positioned forward relative to the front casing segment through the step surface of the annular positioning groove; the upper end of the positioning key passes through the positioning long hole of the front casing segment and is inserted into the rear section of the positioning long groove of the rear casing segment, the cushion block passes through the locking screw hole of the front casing segment and is inserted into the front section of the positioning long groove of the rear casing segment, so that the rear yielding notch at the lower end of the positioning key is tightly pressed against the rear end of the positioning long hole of the front casing segment, so that the rear casing segment is axially positioned backward relative to the front casing segment; the positioning screw is screwed into the locking screw hole of the front casing segment, so that the cushion block is radially limited in the positioning long groove.
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