Experimental Investigation of the Performance of a Monopropellant Hydrazine Thruster in Atmospheric Conditions

Amirifar, Mohamad Ali; Rajabi, Alireza; Ghadiri Masoom, Nooredin; Amirsardari, Zahra; Kamranifar, Majid

doi:10.22034/jssta.2022.325135.1047

Document Type : Original Article

Authors

¹ Space Transportation Research Institute, Iranian Space Research Center, Tehran, IranIranian Space Research Center

² Space Transportation Research Institute, Iranian Space Research Center, Tehran, Iran

https://doi.org/10.22034/jssta.2022.325135.1047

Abstract

In this research, the performance of a monopropellant hydrazine thruster in atmospheric conditions has been investigated experimentally. For this purpose, after designing and constructing the thruster according to the functional requirements of the thruster, a test was designed and after that, the desired thruster was tested in atmospheric conditions. The test results show that the tested thruster can generate 2000 pulses with a width of 0.5 seconds and a periodicity of one second with reproducibility. It was shown that the life of this thruster is more than 2000 pulses and the thruster was able to produce very small beats of 3 mNS in reproducibility. Also, comparing the results of the current thruster sample with the experimental results of other thrusters showed how by selecting the appropriate dimensions for the injector, catalyst chamber and nozzle, the characteristics of pressure rise time, minimum impulse, pulse centroid and pressure drop time in the Thruster can be well controlled. Reducing the injector diameter (by keeping the flow rate constant by increasing the injection pressure) reduces the impulse (within a constant pulse width) and increases the pressure rise time. Reducing the dimensions of the catalyst chamber also reduces the increase and decrease time of the pressure, resulting in a smaller pulse centroid

Keywords

Monopropellant# Hydrazine# Thruster# Catalyst

20.1001.1.27834557.1400.1.2.11.6

Main Subjects

Propulsion

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Space Science, Technology and Applications

Experimental Investigation of the Performance of a Monopropellant Hydrazine Thruster in Atmospheric Conditions

References

References

Volume 1, Issue 2 - Serial Number 2
March 2022
Pages 126-137

Experimental Investigation of the Performance of a Monopropellant Hydrazine Thruster in Atmospheric Conditions

References

References

Volume 1, Issue 2 - Serial Number 2March 2022Pages 126-137

Volume 1, Issue 2 - Serial Number 2
March 2022
Pages 126-137