Integrated cold air propulsion system

Abstract

The invention relates to the technical field of micro satellite propulsion system control, in particular to an integrated cold air propulsion system. The integrated cold air propulsion system comprises a storage tank, a liquid cavity, an air cavity, a propellant management device and a propulsion device, the built-in design is adopted in the propellant management device and the propulsion device, and the propellant management device and the propulsion device are packaged in the storage tank, so that connection pipelines between the devices are eliminated, the structure is more compact, the occupied space is reduced, and meanwhile, the connection is more stable and reliable. The liquid cavity is connected with the air cavity by the propellant management device, and the liquid cavity and the air cavity are controlled to be isolated or connected. During connection, the propellant management device controls a liquid R134a single-component propellant to be converted into a gaseous R134a single-component propellant, the gaseous R134a single-component propellant is output to the air cavity to ensure that the propellant of the air cavity is purely gaseous, and higher propulsion efficiency is achieved. The R134a single-component propellant is adopted, the integrated cold air propulsion system is non-toxic, safe and environmentally friendly. Vaporization and liquefaction are easily achieved at a normal temperature, and large thrust and large specific impulse are achieved.

Description

technical field [0001] The invention relates to the technical field of micro-satellite propulsion system control, in particular to an integrated cold air propulsion system. Background technique [0002] The propulsion system is mainly used in the satellite control system, which has the functions of adjusting the satellite attitude and orbit. In the micro-satellite control system, the propulsion systems used mainly include cold air propulsion system, chemical propulsion system, and electric propulsion system. Existing cold gas propulsion systems mainly contain propellants such as nitrogen, liquid ammonia, butane, etc., and conduits are used to connect various components, which require on-site connection and coordination of pipelines. The stability of the system is not good, it takes up a lot of space, the installation efficiency is low, the airtightness is not enough, and the problem of valve leakage is prone to occur. In addition, the specific impulse of the nitrogen cold a...

AI Technical Summary

Problems solved by technology

Existing cold gas propulsion systems mainly contain propellants such as nitrogen, liquid ammonia, butane, etc., and conduits are used to connect various components, which require on-site connection and coordination of pipelines. The stability of the system is not good, it takes up a lot of space, the installation efficiency is low, the airtightness is not enough, and the problem of valve leakage is prone to occur

In addition, the specific impulse of the nitrogen cold air propulsion system is small, it is difficult to liquefy, the system volume and weight are large, and it is easy to leak; the liquid ammonia cold air propulsion system has a small specific impulse, high heating power, poisonous, flammable and explosive; Small specific impulse, flammable and explosive, large system volume, easy to leak

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