Research On Multi-start ADN Flow-adjustable Miniature Orbit Control Thruster

Single-component thruster is a kind of power device which uses the catalytic decomposition of single-component propellant as the power source.In recent years,with the development of aerospace technology ADN the improvement of people’s awareness of environmental protection,non-toxic green single-component liquid propellants as the power source of single-component thrusters have become the focus of research in this field.ADN single-component propellant has attracted more ADN more attention from many countries ADN scientific research units due to its advantages such as non-toxicity,pollution-free ADN high density specific impulse.This paper uses numerical simulation method to numerically analyze the working process of ADN single component propulsion system,which has certain significance ADN reference value for improving the design level of single component propulsion system.This article focuses on the following aspects:(1)In this paper,by describing the working process in the ADN single-component thruster,Taking ADN single component propulsion system as the research object,the main components ADN working principle of ADN single component propulsion system are introduced in detail;the corresponding Reynolds transport equations,continuous equations of components ADN mixtures,momentum conservation equations,energy conservation equations,ADN turbulent combustion equations are established;Considering the influence of porous media on the working process of thrusters,a porous media model was established..(2)According to the working process of the storage tank.The numerical simulation software Msc.marc is used to carry out numerical simulations of the three types of flexible metal diaphragm with different wall thickness gradients.The simulation ADN comparative analysis of the simulation results verify the working principle of the storage tank ADN provide a certain reference for the design of the storage tank.(3)By simplifying the physical model of the pneumatic angle valve ADN the movement process of the valve core.The simulation software FLUENT ADN its user-defined function(UDF)are used to control the pneumatic angle valve core The internal flow field during the movement is numerically calculated,ADN the simulation results are analyzed in depth.(4)Based on the kinetic model of catalytic decomposition reaction of ADN single-component propellant,FLUENT software was applied to the ADN single-component thruster under different parameters(propellant mass flow,catalytic bed porosity,catalytic bed preheat temperature,catalytic bed shaft).The length of the nozzle ADN the nozzle exit angle)were simulated ADN analyzed,ADN different propellant mass flows,catalytic bed porosity,catalytic bed preheating temperature,axial length of the catalyst bed,ADN nozzle exit angle were analyzed for ADN single group.The influence law of the working process of the meta thruster.