A multi-pulse solid rocket motor with controllable thrust

Abstract

The invention discloses a controllable thrust multi-pulse solid rocket engine. The controllable thrust multi-pulse solid rocket engine comprises a combustion chamber, a control system and a power source. The combustion chamber is composed of an electric control solid propellant, electrodes, a combustion chamber shell, a sensor, a spraying pipe and the like. The electric control solid propellant isan insensitiveness propellant with the electric control effect, combustion can be achieved through electrification, and extinguishment can be achieved through outage. The electric control solid propellant or the electrodes are coupled to a transmission device, and the relative position between the electric control solid propellant and the electrodes can be changed. When all the electrodes make contact with the electric control solid propellant, the electric control solid propellant is powered on and combusted, and when one or more electrodes do not make contact with the electric control solidpropellant, combustion is stopped, and extinguishment is achieved. According to the controllable thrust multi-pulse solid rocket engine, an ignition device of the rocket engine is omitted, the combustion speed of the electric control solid propellant and the mass of the electric control solid propellant consumed for combustion can be accurately controlled, safety is high, thrust of the engine canbe controlled in real time, and repeated starting is conducted; and the controllable thrust multi-pulse solid rocket engine has wide application prospects in the multi-pulse rocket engine field needing real-time thrust control.

Description

technical field [0001] The invention belongs to the field of solid rocket motors, in particular to a multi-pulse solid rocket motor with real-time controllable thrust and repeatable starting. Background technique [0002] Compared with liquid rocket motors, solid rocket motors have the characteristics of simple structure, convenient use, relatively cheap, good stability, easy storage, high mass ratio, high reliability, high energy density, and easy transportation. Rocket engines or solid-liquid hybrid rocket engines can be started repeatedly and control thrust in real time, which greatly limits their application range. Although some methods can be used to control the thrust of the solid rocket motor, such as changing the shape of the propellant grain and changing the burning rate of the propellant at different positions, these methods work according to the established thrust curve and cannot control the thrust in real time. Some solid rocket motors change the thrust in real...

AI Technical Summary

Problems solved by technology

This method is not only difficult to determine the electrical power required by the electronically controlled solid propellant to achieve a certain burning rate, but also difficult to ensure that the electrodes are in continuous and uniform contact with the electronically controlled solid propellant during the combustion process of the electronically controlled solid propellant

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