What is it about?
In this paper high precision measurement data for film cooling with gaseous hydrogen are presented and discussed, which were optained with a new rectangular, experimental combustion chamber. Furthermore, a simple and accurate correlation for the prediction of film cooling efficiency is introduced.
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Why is it important?
Design of film cooling is one of the major challenges in the development of modern liquid rocket engines, because its behavior is highly complex and not well understood yet. Our work provides a simple and precise correlation for the design of gaseous hydrogen film cooling, which can help to reduce development costs and increase the efficiency or rather reusability of rocket motors. Moreover, accurate measurement data give a better insight into the processes of gaseous film cooling in rocket combustion chambers.
Perspectives
Beeing the desinger of this novel experimental combuston chamber, it was a long, challenging but also joyful journey until I can finally present my first article. With this article I hope to create additional value for designers of rocket motors and researchers in this field. I would also like to make contact with interested specialists, which would help to promote the understanding of film cooling.
Georg Kühlwein
German Aerospace Center
Read the Original
This page is a summary of: Heat Transport Processes of Film Cooling in Rocket Combustion Chambers, January 2024, American Institute of Aeronautics and Astronautics (AIAA),
DOI: 10.2514/6.2024-0350.
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