A flexible joint and flexible nozzle for wide temperature use

A flexible joint and flexible nozzle technology, which is applied in the directions of jet propulsion, machine/engine, rocket engine, etc., can solve the problem that the structural rigidity and force transmission function of the flexible joint cannot be satisfied, and the use requirements of solid rocket motors can no longer be met. It can not well meet the problems of shear stress and bending moment, so as to achieve the effect of not easy crack propagation damage, improving work stability and reducing negative quality.
CN113074062BActive Publication Date: 2022-04-29THE GENERAL DESIGNING INST OF HUBEI SPACE TECH ACAD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
THE GENERAL DESIGNING INST OF HUBEI SPACE TECH ACAD
Publication Date
2022-04-29

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Abstract

This application relates to the field of solid rocket motors, and discloses a flexible joint for wide temperature use, including a front flange, a rear flange, a multi-layer elastic member and a multi-layer reinforcement, the front flange and the rear flange are connected by multiple Layer elastic parts are connected with multi-layer reinforcing parts; the elastic parts are made of addition-type liquid silicone rubber material; the reinforcing parts are made of high-strength carbon / phenolic composite material; the elastic parts and the reinforcing parts are both spherical and annular sheet structures , the multi-layer reinforcement and the multi-layer elastic are bonded alternately; the shortest arc length of the reinforcement is longer than the shortest arc length of the elastic, and the part of the reinforcement that is longer than the elastic is filled with dynamic sealing non-vulcanized putty. The wide temperature range of the present application uses flexible joints and flexible nozzles, the stability and safety performance of the elastic parts and reinforcing parts are better, and they have better environmental adaptability.
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Description

technical field

[0001] The application relates to the technical field of solid rocket motors, in particular to a flexible joint and a flexible nozzle for wide temperature use. Background technique

[0002] At present, solid rocket motors have the advantages of good safety, high reliability, good storage performance, high specific impulse density and convenient service handling. They have become the main power device in the missile field and are also widely used in the aerospace field. The flexible nozzle is one of the key components of the solid rocket motor, and it is a device for the energy conversion of the engine and the realization of thrust vector control. It is usually composed of a movable body, a fixed body, a flexible joint and an actuator. As the core component of the flexible nozzle, the flexible joint achieves the purpose of swinging the flexible nozzle through the deformation of the flexible joint.

[0003] The flexible joint is composed of four parts: front f...

Claims

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