Electric sliding discal valve type gas flow regulating device for solid rocket propellant ramjet

Abstract

The invention discloses an electric sliding discal valve type gas flow regulating device for a solid rocket propellant ramjet. The device comprises a sleeve provided with a cylindrical inner cavity, a valve core extending into the inner cavity of the sleeve and rotationally matched with the sleeve, a drive motor providing rotational output, a transmission screw rod connected with the output end of the drive motor, a transmission nut constituting a screw structure with the transmission screw rod as well as a transmission lever converting linear motion of the transmission nut into rotating motion of the valve core. The electric sliding discal valve type gas flow regulating device is uniformly heated in a working process, has low probability of pore throat deposition and blockage, and is applicable to endurance propulsion of a missile; further, the device requires lower driving power, and is simple in structure, easy to assemble, lower in cost and high in regulating precision.

Description

technical field [0001] The invention belongs to the technical field of gas flow adjustment for solid rocket ramjet engines, in particular to an electric sliding disc valve type solid rocket ramjet gas flow adjustment device. Background technique [0002] The solid rocket ramjet has the advantages of both ramjet and rocket engines, and has the advantages of high specific impulse, small size, light weight, compact structure, reliable operation, and low cost. In order to ensure that the engine has the best working performance and good thrust adjustment capability, the gas flow of the solid rocket ramjet should be adjusted. At present, there are four main schemes for gas flow regulation: fixed flow type, choke type, non-choke type and swirl valve type. Flow regulating valves usually adopt a variety of configurations, such as plunger spool valve, rotary cam valve, rotary slide disc valve, and cone valve. The transmission mechanisms used in traditional control systems generally ...

AI Technical Summary

Problems solved by technology

Although the structure is simple and the response speed is fast, it needs to add a gas source device, which occupies a large space. Since the gas is prone to leakage, it is not easy to achieve precise control in the process of adjusting the gas flow.

Wang Yilin of Northwestern Polytechnical University proposed a non-coaxial needle-valve gas flow regulation system with a 90-degree angle between the nozzle and the combustion chamber. Although the throat plug rod is easy to seal and thermal protection is easy to achieve, the experimental system is large and cannot achieve precise control.

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