Sliding plate valve type solid rocket ramjet flow-adjustable gas generator

Abstract

The invention discloses a flow-adjustable gas generator for a sliding disc valve type solid rocket ramjet, which comprises a combustion chamber, an end cover of the combustion chamber, a motor fixing frame, a rotary servo motor, a control board, a sector gear, a sliding disc valve bushing, Nozzle, planetary gear reducer, curved rack, sliding disc valve; the end cover of the combustion chamber is fixedly connected with the nozzle, and the end cover of the combustion chamber and the fixed sliding disc valve sleeve of the combustion chamber are sleeved on the outer circle of the nozzle. The other end of the sliding disc valve casing is fixedly connected with the sliding disc valve and the rotary servo motor is fixed on the end cover of the combustion chamber, and the rotary servo motor is connected with the sector gear through a planetary gear reducer; the outer end of the sliding disc valve casing There is an arc-shaped rack on the circle; the sector gear meshes with the arc-shaped rack; a set of air holes is set on the end cover of the nozzle; a set of adjustment holes is set on the slide valve, and the position of the adjustment hole and the position of the air hole Opposite; the control board is used to control the rotation angle of the rotary servo motor; the invention can realize the precise control of gas flow.

Description

technical field [0001] The invention belongs to the field of solid rocket ramjet, in particular to a flow-adjustable gas generator of a sliding disc valve type solid rocket ramjet. Background technique [0002] The solid rocket ramjet combines the excellent performance of the solid rocket motor and the ramjet. It has the advantages of simple structure, high specific impulse, strong maneuverability, low cost, convenient maintenance and good reliability. It has become a new generation of high-performance missile system. first choice. In order to stabilize the air-fuel ratio of the solid impulse engine within a certain range, to allow the engine to work efficiently and safely while having a good thrust adjustment capability, it is necessary to adjust the flow rate of the gas generator. At present, the gas flow adjustment schemes mainly include: fixed flow scheme, variable combustion speed scheme, non-choking scheme and congestion scheme. In the congestion state scheme, compar...

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Problems solved by technology

For example, Liu Yuanxiang. Research on the control system of variable flow integrated solid-impulse engine [D]. Beijing Institute of Technology, 2015.] proposed a pneumatic linear displacement actuator to drive the gate valve to adjust the gas flow. The structure is complex and the response speed is slow , and the pneumatic actuator is used as the power source, the cylinder volume is large, which is not conducive to the overall layout; at the same time, because the gas is prone to leakage, it is not easy to achieve precise control in the process of adjusting the gas flow

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