Design for solid rocket engine double flexible nozzle joint

Abstract

The invention discloses a design for a solid rocket engine double flexible nozzle joint. The design for the solid rocket engine double flexible nozzle joint comprises a front flange, a front pivot point flexible joint, a middle flange, a rear pivot point flexible joint and a rear flange; the edge of the front flange is fixedly connected with the front pivot point flexible joint; the front pivot point flexible joint comprises a front pivot point flexible joint elastic piece group and a front pivot point flexible joint reinforcing piece group; the front pivot point flexible joint elastic piece group is fixedly connected with the side wall of the middle flange; the middle flange comprises a middle flange front end, a middle flange middle end and a middle flange rear end; the outer wall of thefront end of the middle flange is fixedly connected with the front pivot point flexible joint; the inner wall of the rear end of the middle flange is fixedly connected with the rear pivot point flexible joint; the rear pivot point flexible joint comprises a rear pivot point flexible joint elastic piece group and a rear pivot point flexible joint reinforcing piece group; and the rear pivot point flexible joint elastic piece group is fixedly connected with the side wall of the rear flange. The double flexible joint can effectively solve the problem of pivot point drift of an engine during working and improves the control precision of an aircraft.

Description

technical field [0001] The invention relates to the technical field of components of flexible nozzles of solid rockets, in particular to the design of double flexible nozzle joints of solid rocket motors. Background technique [0002] Solid rocket motor is the main power device of various missile weapons nowadays, and it is also widely used in the aerospace field, and its performance often determines the overall performance of aerospace vehicles. The flexible nozzle is one of the most important components of the solid rocket motor, and it is the device for the energy conversion of the motor and the control of the thrust direction. The reliability of the nozzle is related to whether the aircraft can work normally. The flexible nozzle is actually a kind of swinging nozzle with the help of a flexible joint to implement the nozzle swing to achieve the purpose of thrust direction control. It is usually composed of a movable body, a fixed body, a flexible joint and an actuator. ...

AI Technical Summary

Problems solved by technology

[0003] During the working process of the engine, since the pivot center of the engine ball bearing nozzle is fixed, but the pivot center of the flexible nozzle is the concentric spherical center of the spherical elastic part group and the reinforcing part group, and the elastic part group is a kind of viscoelastic material. Under pressure, a large strain will occur, and the reinforcement group will also deform, resulting in a change in the center of gravity of the flexible nozzle during the swing process

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