What is it about?
Detonation is expected to simplify the system due to hypersonic combustion. Moreover, detonation is expected to improve thermal efficiency due to fluid compression to high temperatures and pressures by the shock wave. Rotating detonation engine (RDE) is a combustor with rotational propagation of detonation wave and continuously provides thrust. Gas propellants have been used in many RDE studies. However, for practical application, adaptation of liquid propellants is important in terms of density. There are few experimental examples with liquid propellant. The purpose of this study is help in the modeling effort of RDE with liquid propellant. This study investigated internal combustion structure of RDE with liquid ethanol. Moreover, we compared the thrust performance and the internal structure in different injector.
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Why is it important?
By visualizing internal combustion structure, different combustion mode was obserbed in different injector. Therefore, atomization was an important parameter for propagation of detonation wave. Physical properties of ethanol and oxygen are well known, so it's possible to quantify how atomization and combustion. Combustion completion is important for RDE design. The relationship between atomization performance and combustion mode can help in design of RDE with liquid propellant.
Perspectives
I believe this study is a step forward to the application of RDE. In this study, combustion structure of RDE with liquid propellant was clarified. In the future study, we want to investigate thrust performance for different combustor lengths. I hope this article will help to further the research of RDE using liquid propellants.
Tomoki Sato
Nagoya University
Read the Original
This page is a summary of: Experimental Research on Thrust Performance of Rotating Detonation Engine with Liquid Ethanol and Gaseous Oxygen, June 2022, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/6.2022-4143.
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