Electric rotary sliding-plate valve-type rocket ramjet engine gas flow-rate adjusting device

Abstract

The invention discloses an electric rotary sliding-plate valve-type rocket ramjet engine gas flow-rate adjusting device. Both a valve body upper box body and a valve body lower box body are respectively of a barrel structure, the two barrel structures define a cylindrical box body, a spray pipe hole is respectively formed in corresponding positions of the end surfaces of the two cylinder structures, a drive motor is fixedly arranged on the axis of the end surface of the valve body upper box body, a shaft of the drive motor is coaxially fixedly connected with a sliding-plate connecting rod through a coupler, the sliding-plate connecting rod penetrates through a sliding-plate connecting rod hole formed in the axis of the end surface of the valve body lower box body to be fixedly connected with a sliding plate, a rotary plane of the upper end surface of the sliding plate is fit to the outer end surface of the valve body lower box body, a hole is formed in the position, corresponding the spray pipe hole, of the sliding plate, a spray pipe is fixed in the spray pipe holes of the valve body upper box body and the valve body lower box body, a gas generator is arranged on the outer end surface of the valve body upper box body, the position of the gas generator corresponds to the position of the spray pipe, and a pressure sensor is arranged on an end enclosure of the gas generator. The electric rotary sliding-plate valve-type rocket ramjet engine gas flow-ate adjusting device is simple in structure, precise to control, reliable to work and relatively low in cost.

Description

technical field [0001] The invention belongs to the technical field of gas flow regulation for solid rocket ramjet engines, in particular to an electric rotary slide valve type gas flow regulation device for solid rocket ramjet engines. 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 system...

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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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