Solid cool air micro-propelling system

Abstract

The invention discloses a solid cool air micro-propelling system. The solid cool air micro-propelling system comprises an air storage chamber, a magnetic valve and a mini-type resistive heater which are sequentially connected, wherein the air storage chamber is provided with a pressure sensor and a plurality of nitrogen generators; the mini-type resistive heater is composed of a silicon wafer and a heating resistor; the silicon wafer is internally provided with a vent groove and a Laval type nozzle; the air inlet end of the vent groove is connected with the magnetic valve; the air outlet end of the vent groove is connected with the Laval type nozzle; the heating resistor is arranged on a glass substrate; the silicon wafer is bonded with the glass substrate. The solid nitrogen generators replace a high-pressure nitrogen storage tank to store nitrogen, and the size and mass of the whole system are reduced greatly; nitrogen is heated by the mini-type resistive heater before being sprayed out from the nozzle, and then is sprayed out after reaching a certain temperature, thrust generated after the nitrogen is sprayed out is increased, the propelling efficiency of the whole micro-propelling system is improved, thrust is small and precision is high.

Description

technical field [0001] The invention relates to a micro propulsion system, in particular to a solid cold air micro propulsion system, which belongs to the field of space propulsion. Background technique [0002] In recent years, in order to meet strategic needs, all military powers are actively developing micro-nano satellites with rapid response capabilities. The micro-nano satellite formation can realize the functions of traditional large satellites, such as forming distributed SAR, communication constellation, navigation constellation, optical imaging system, etc., especially in the rapid response system and emergency system, its role is irreplaceable. Micro-nano-satellite formation flight means that the satellites cooperate with each other to realize the function of a single large satellite. Formation flying satellites can join and exit at any time, with high autonomy, and the system has high reconfiguration, redundancy, safety and reliability, which can reduce the depe...

AI Technical Summary

Problems solved by technology

However, the conventional cold gas propulsion system is equipped with a high-pressure gas storage device with a large mass, which is difficult to apply to some micro-nano satellites, and the gas is stored in a high-pressure gas storage tank, so it is difficult to avoid gas leakage problems, so it cannot be applied to some long-term space mission

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