Small solid-liquid sounding rocket for teaching and popularizing science

Abstract

The invention discloses a small solid-liquid sounding rocket for teaching science popularization, and belongs to the field of solid-liquid hybrid engines. The small solid-liquid sounding rocket comprises a rocket shell, an empennage, a parachute recovery device, a gas cylinder, a valve and an engine thrust chamber. The rocket shell is formed by inserting a nose cone and a cylindrical skin, the parachute recovery device, the gas cylinder, the valve and the engine thrust chamber are sequentially installed in the rocket shell from the head to the tail, and the engine thrust chamber is fixed to the tail end of the skin through a thrust chamber fixing ring; the parachute recovery device is adopted for recovery; and by utilizing the characteristics that nitrous oxide takes a liquid form as a main body in a high-pressure gas cylinder and the saturated vapor pressure of nitrous oxide is high, an oxidant can be conveyed in a self-pressurization manner, so that the structure of an oxidant supplysystem is simplified, and the negative quality of the system is reduced. The rocket is suitable for science popularization and teaching demonstration, the structure of the solid-liquid hybrid engineis clearly displayed, and the principle of the solid-liquid hybrid engine can be clearly known through the structure.

Description

technical field [0001] The invention belongs to the field of solid-liquid hybrid engines, and in particular relates to a small solid-liquid sounding rocket for teaching and popularizing science. Background technique [0002] The solid-liquid hybrid engine is a chemical rocket engine in which the fuel is solid and the oxidant is liquid and stored separately. Therefore, energy management can be better achieved by controlling the supply of oxidant. Compared with solid rocket motors, solid-liquid hybrid engines have the advantages of high energy performance, can be switched on and off multiple times, and easy thrust adjustment. Compared with liquid rocket engines, they have the advantages of good safety, high reliability, and simple structure. Therefore, the solid-liquid hybrid engine has a good application prospect. [0003] The oxidants used in solid-liquid hybrid engines mainly include liquid oxygen, liquid fluorine, nitrous oxide, hydrogen peroxide, and nitric acid, among w...

AI Technical Summary

Problems solved by technology

Since the propellant of the solid rocket motor includes both fuel components and oxidant components, it is an inflammable and explosive item and there are control problems in the transportation process. It is not easy for educational institutions such as universities to obtain it. In addition, the propellant is dangerous and difficult to store. Used in the teaching process; the liquid rocket engine pipeline system is complex, not easy to miniaturize, and the cost is high, so it is not suitable for application in teaching and popular science

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