Propane liquid gas micro propulsion device suitable for micro-nano satellite

Abstract

The invention aims to provide a propane liquid gas micro propulsion device suitable for a micro-nano satellite. The device comprises an exhaust valve, a first propellant storage box, a second propellant storage box, a first heat-conducting module, a second heat-conducting module, a pressure reducer, a buffer tank, a safety valve, a thruster, a pressure sensor A, a pressure sensor B, a filter and a control circuit box. Propane serves as a propellant in the micro propulsion device, so the micro propulsion device is non-toxic and pollution-free; the micro propulsion device has the advantages of simple structure, low quality, low power consumption and high reliability; mounted on a mounting partition board, the micro propulsion device is convenient to be mounted and replaced; and because of no excessive relation and interference with other parts of the satellite, the micro propulsion device is convenient to be replaced and maintained.

Description

technical field [0001] The invention belongs to the technical field of liquefied gas micro-propulsion, in particular to a propane liquefied gas propulsion device suitable for micro-nano satellites. Background technique [0002] It is a contemporary trend to manufacture small satellites according to actual needs, and its purpose is mainly to save costs. Satellites with a weight of 100kg to 500kg are usually called small satellites, satellites with a weight of 10kg to 100kg are called microsatellites, and satellites with a weight of less than 10kg are called nanosatellites. Satellites below 1kg are called pico-satellites. The main features of micro-nano-satellites are compact development plan (short cycle), small shape, strong function and low cost. Over the past ten years, high-performance modern micro-satellites from various countries in the world have been successfully used in almost every field where satellites may be applied. Typical applications are in global communica...

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Problems solved by technology

However, liquefied gas is the propellant of the propulsion device because it needs to go through a gasification process to become gas to complete the work, so it needs to absorb a lot of heat. If the thermal control measures of the micro-propulsion device are not good, some propellant will be released from the thruster in liquid form. Ejection will reduce the working performance of the micro-propulsion device and waste propellant

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