N2O micro thruster experiment device

Abstract

The invention discloses a N2O micro thruster experiment device, and belongs to the technical field of spatial micro thrust. The device comprises a N2O gas inlet connecting pipe nozzle, a red copper sealing ring, a front porous plate, a catalytic decomposition chamber, a pressure measurement connecting pipe nozzle, a micro spray pipe, a rear porous plate, a temperature measurement connecting pipe nozzle and catalyst grains; each component of the N2O micro thruster experiment device is replaceable, wherein the front porous plate, the rear porous plate and the N2O gas inlet connecting pipe nozzle can be freely detached, and the rest components form a whole by welding; the front porous plate and the rear porous plate are fixed on the step surface of the catalytic decomposition chamber, the catalyst grains are filled in the middle, and the N2O gas inlet connecting pipe nozzle is connected with the catalytic decomposition chamber through screw threads to fix the front porous plate; and upstream N2O pressure and flow of the micro thruster experiment device are adjustable, N2O enters the catalytic chamber from the gas inlet connecting pipe nozzle to automatically maintain decomposition, and the temperature measurement connecting pipe nozzle and the pressure measurement connecting pipe nozzle are used for monitoring the starting temperature of a catalytic bed and the pressure of a thrust chamber respectively. The device can conveniently research related parameters of N2O micro thruster performance.

Description

technical field [0001] The present invention relates to a kind of N 2 O The micro thruster experimental device belongs to the field of space micro propulsion technology. Background technique [0002] With the development of aerospace technology, micro thrusters are widely used in spacecraft. The micro thruster can realize precise impulse control and be used to precisely control the attitude of the aircraft. It has the characteristics of small size, fast response speed and high reliability. Micro-thrusters can have a variety of working fluids. Traditional micro-propulsion usually uses cold air for propulsion. The working fluid is mainly nitrogen, which is cheap and non-toxic, but has a low specific impulse. Chemical propulsion is often based on toxic and flammable propellants such as hydrazine. As countries around the world pay attention to environmental protection issues, the use of nitrous oxide, a non-toxic propellant, can break through the limitations of traditional pro...

AI Technical Summary

Problems solved by technology

Existing N 2 O The micro thruster has a large volume and complex connection structure, it is inconvenient to disassemble and load the catalyst, the thrust chamber and the nozzle are too thick to conduct a lot of heat outward, and the thrust and specific impulse performance cannot be effectively improved

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