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Theses

Caractérisation expérimentale de la pulvérisation, de l'allumage et de la combustion de bi-ergols. Application à la propulsion spatiale par ergols stockables

Abstract : The physical processes involved in spraying are the first step towards a comprehensive understanding of the behavior of rocket engines using storable propellants. The first part of this work identifies, through visualizations and particle sizing, the important parameters driving the formation of spray by impinging liquid jets. Then, injectors dedicated to spray storable green-propellants are designed. The second part of this thesis aims at studying the combustion of ethanol with hydrogen peroxide, which are regarded as green-storable propellants. But the use of this innovative bi-propellant association required a detailed analysis of their ignition compatibility, as well as their combustion performance within the range of 0,4 – 2,0 in overall equivalence ratio. Specific optical and physical diagnostics helped to achieve these goals. Combustion efficiency reached between 87 and 98 %, pressure fluctuations did not exceed 10 %, but the slight differences obtained allowed to select the best injection configurations promoting efficient combustion and stability.
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https://tel.archives-ouvertes.fr/tel-03476817
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Submitted on : Monday, December 13, 2021 - 10:59:11 AM
Last modification on : Tuesday, December 14, 2021 - 3:55:44 AM
Long-term archiving on: : Monday, March 14, 2022 - 6:44:05 PM

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2016ESMA0025_indiana.pdf
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  • HAL Id : tel-03476817, version 1

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Clément Indiana. Caractérisation expérimentale de la pulvérisation, de l'allumage et de la combustion de bi-ergols. Application à la propulsion spatiale par ergols stockables. Autre. ISAE-ENSMA Ecole Nationale Supérieure de Mécanique et d'Aérotechique - Poitiers, 2016. Français. ⟨NNT : 2016ESMA0025⟩. ⟨tel-03476817⟩

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