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Numerical calculation of heat flux profiles in a N2O/C2H4 premixied green propellant combustor using an inverse heat conduction method

Perakis, Nikolaos and Werling, Lukas and Ciezki, Helmut and Schlechtriem, Stefan (2016) Numerical calculation of heat flux profiles in a N2O/C2H4 premixied green propellant combustor using an inverse heat conduction method. In: Space Propulsion Conference. Space Propulsion Conference, 01.-06. Mai 2016, Rom, Italien.

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Abstract

With the aim to replace toxic propellants like hydrazine, an effort has been placed in the investigation of human- and environment-friendlier substances called “Green Propellants”. Within the context of this research initiative and in terms with the REACH-Regulation, the German Aerospace Center (DLR) in Lampoldshausen is developing and testing an experimental demonstrator based on the technology of a premixed nitrous oxide/ethene (N2O/C2H4) propellant. The advantages of this propellant include high specific impulse and low toxicity but are accompanied by several challenges like the high combustion temperature (up to 3300K), which directly influences the thermal design of an engine. For a better understanding of the combustion processes in the premixed propellant and a better estimation of the thermal loads on the thruster material, an accurate calculation of the heat flux in the combustion chamber is required. For this purpose an inverse heat conduction method developed at the Technical University of Munich (TUM) was utilized. Based on the thermocouple measurements in the chamber material, the time-dependant heat flux profiles were calculated using an Iterative Regularization Method (IRM). Heat flux and temperature results for different pressure load points were obtained, thereby helping to characterize the combustion properties of the propellant combination.

Item URL in elib:https://elib.dlr.de/104252/
Document Type:Conference or Workshop Item (Speech)
Title:Numerical calculation of heat flux profiles in a N2O/C2H4 premixied green propellant combustor using an inverse heat conduction method
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Perakis, Nikolaosnikolaos.perakis (at) tum.deUNSPECIFIED
Werling, LukasLukas.Werling (at) dlr.dehttps://orcid.org/0000-0003-4353-2931
Ciezki, HelmutHelmut.Ciezki (at) dlr.deUNSPECIFIED
Schlechtriem, Stefanstefan.schlechtriem (at) dlr.deUNSPECIFIED
Date:5 May 2016
Journal or Publication Title:Space Propulsion Conference
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Green propellants, nitrous oxide fuel blends, premixed monopropellant, N2O, C2H4, inverse heat conduction, heat flux, wall temperature
Event Title:Space Propulsion Conference
Event Location:Rom, Italien
Event Type:international Conference
Event Dates:01.-06. Mai 2016
Organizer:3AF
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Vorhaben ForTrAS - Fortschrittliche Treibstoffe für Anwendungen im Satellitenbereich
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Propellants
Deposited By: Werling, Lukas
Deposited On:12 May 2016 07:43
Last Modified:17 May 2016 08:07

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