Design and Simulation of Single Capillary Injector and Circular Injector Plate for a Monopropellant Thruster

Davari, Sajad; Karimaei, Hadiseh

doi:10.30699/jsst.2021.1314

Document Type : Research Paper

Authors

Sajad Davari ¹
Hadiseh Karimaei ²

¹ PhD Candidate, Aerospace Research Institute, Ministry of Science, Research and Technology, Tehran, Iran

² Assistant professor, Aerospace research institute, Ministry of Science, Research and Technology, Tehran, Iran

https://doi.org/10.30699/jsst.2021.1314

Abstract

In this research, design and simulation of a single capillary injector and three-hole circular injector plate of a 10N Hydrazine monopropellant thruster were performed. Ansys Fluent software was used to simulate the injector and injector plate . Volume of fluid (VOF) method was used to simulate such a flow and turbulence was simulated by k-e model. The characteristics of the injector and injector plate including mass flow rate and average velocity in the injector nozzle were calculated by changing the inlet pressure. The results showed that the injector and the injector plate have the ability to supply the desired mass flow rate of the monopropellant thruster at a known design pressure. In fact the capillary injector has replaced swirl injector with hollow cone spray used in the previous version of this thruster. The dimension of the chamber was significantly reduced by using the capillary injector, which reduces both the volume of the expensive iridium catalyst and weight of the thruster.

Keywords

Main Subjects

System Design, Space Propulsion and Space System Simulation

References

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Design and Simulation of Single Capillary Injector and Circular Injector Plate for a Monopropellant Thruster

References

References

Volume 15, Issue 3 - Serial Number 53September 2022Pages 109-118

Volume 15, Issue 3 - Serial Number 53
September 2022
Pages 109-118