Sliding-disc-valve solid rocket ramjet engine flow-adjustable gas generator

Abstract

The invention discloses a sliding-disc-valve solid rocket ramjet engine flow-adjustable gas generator which comprises a combustion chamber, a combustion chamber end cover, a motor fixing frame, a rotating servo motor, a control panel, a fan-shaped gear, a sliding disc valve sleeve, a spray pipe, a planetary gear speed reducer, an arc-shaped gear rack and a sliding disc valve, wherein the combustion end cover is fixedly connected with the spray pipe and fixed with the combustion chamber; one end of the sliding disc valve sleeve is arranged on the excircle of the spray pipe in a sleeving manner;the sliding disc valve sleeve and the spray pipe are sealed with each other and capable of rotating relative to each other; the other end of the sliding disc valve sleeve is fixedly connected with the sliding disc valve; the rotating servo motor is fixed on the combustion chamber end cover and connected with the fan-shaped gear through the planetary gear speed reducer; the arc-shaped gear rack isarranged on the excircle of the sliding disc valve sleeve; the fan-shaped gear is meshed with the arc-shaped gear rack; a group of vent holes are formed in an end cover of the spray pipe; a group ofadjusting holes are formed in the sliding disc valve; the positions of the adjusting holes directly face those of the vent holes; and the control panel is used for controlling the rotating angle of the rotating servo motor. By the adoption of the sliding-disc-valve solid rocket ramjet engine flow-adjustable gas generator disclosed by the invention, the accurate control of gas flow can be achieved.

Description

Technical field [0001] The invention belongs to the field of solid rocket ramjet engines, in particular to a spool valve type solid rocket ramjet motor flow adjustable gas generator. 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 The first choice. In order to stabilize the air-fuel ratio of the solid impulse engine within a certain range, and make the engine work efficiently and safely, and at the same time have good thrust adjustment capabilities, it is necessary to adjust the flow rate of its gas generator. The current gas flow regulation schemes mainly include: fixed flow scheme, variable burning rate scheme, non-choked scheme and choked scheme. Compared with other flow adjustment sche...

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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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