Liquid ammonia propulsion system for pico-satellite or nano-satellite

Abstract

The invention discloses a liquid ammonia propulsion system for a pico-satellite or a nano-satellite. The liquid ammonia propulsion system comprises a digital signal processing circuit and a micro-propulsion device, wherein the micro-propulsion device comprises a propulsion system storage tank used for storing liquid ammonia, a thruster communicated with the propulsion system storage tank, and a solenoid valve mounted between the propulsion system storage tank and the thruster; the digital signal processor comprises an information monitoring module, a control switch module and an interface communication module; the information monitoring module is used for monitoring the current operation state of the propulsion system; the control switch module is used for controlling the solenoid valve so as to turn on or turn off the thruster; the interface communication module is used for feeding back information on the current operation state of the propulsion system to the satellite and receiving remote control commands sent by the satellite. The liquid ammonia propulsion system has the characteristics of small size, light weight, low power consumption, high specific impulse, simple structure, short development period, high safety performance, multi-functional integration, space plug and play function, universal applicability to 10 kg-magnitude pico-satellites and nano-satellites, and the like.

Description

technical field [0001] The invention belongs to the technical field of liquefied gas micro propulsion, and in particular relates to a liquid ammonia propulsion system suitable for a Pina satellite. Background technique [0002] Pina satellites have the characteristics of light weight, small size, short development cycle, low cost, high functional density, flexible launch, etc., and have broad application prospects in communication, remote sensing and other fields. The development of microsatellites can be said to be an epoch-making revolution in international aerospace technology and space technology, and at the same time, it also brings new opportunities and challenges to my country's aerospace industry. The classification of small satellites is generally based on weight, and there are different standards in this regard at home and abroad. The general principle of division in China is: satellites in the order of kilograms are called pico-satellites, and satellites in the o...

AI Technical Summary

Problems solved by technology

Most of the existing domestic micro-propulsion technologies are aimed at micro-nano satellites, but few mentions are made specifically for the 10-kilogram Pina satellite; at the same time, the relevant inventions of domestic existing micro-propulsion technologies mainly explain the structure of micro-propulsion devices characteristics, did not fully disclose the characteristics and functions of the orbit control propulsion system from the perspective of mechatronics

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