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Hot-Fire Testing of Liquid Oxygen/Hydrogen Single Coaxial Injector at High-Pressure Conditions with Optical Diagnostics

Suslov, Dmitry and Hardi, Justin and Knapp, Bernhard and Oschwald, Michael (2019) Hot-Fire Testing of Liquid Oxygen/Hydrogen Single Coaxial Injector at High-Pressure Conditions with Optical Diagnostics. In: Progress in Propulsion Physics Torus Press. pp. 391-406. ISBN 978-5-94588-228-7. ISSN 2493-3503

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Official URL: https://www.eucass-proceedings.eu/articles/eucass/abs/2019/01/eucass2019_391/eucass2019_391.html

Abstract

Injector behavior is of utmost importance for the performance and stability of liquid rocket engines (LREs). A major problem is getting a highly efficient homogeneous mixture and effective chemical reaction of fuels at minimum chamber length. Despite substantial progress in numerical simulations, a need for experimental data at representative conditions for development and validation of numerical design tools still exists. Therefore, in the framework of the DLR-project “ProTau,” the authors have performed tests to create an extended data base for numerical tool validation for high-pressure liquid oxygen (LOx) / hydrogen combustion. During the experimental investigations, a windowed DLR subscale thrust chamber model “C” (designated BKC) has been operated over a broad range of conditions at reduced pressures of approximately 0.8 (4 MPa), 1 (5 MPa), and 1.2 (6 MPa) with respect to the thermodynamic critical pressure of oxygen. Liquid oxygen and gaseous hydrogen (GH2) have been injected through a single coaxial injector element at temperatures of ~ 120 and ~ 130 K, respectively. High-speed optical diagnostics have been implemented, including imaging of OH* emission and shadowgraph imaging at frequencies from 8 up to 10 kHz to visualize the flow field.

Item URL in elib:https://elib.dlr.de/132741/
Document Type:Book Section
Title:Hot-Fire Testing of Liquid Oxygen/Hydrogen Single Coaxial Injector at High-Pressure Conditions with Optical Diagnostics
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Suslov, DmitryDmitry.Suslov (at) dlr.dehttps://orcid.org/0000-0002-5160-9292
Hardi, JustinJustin.Hardi (at) dlr.dehttps://orcid.org/0000-0003-3258-5261
Knapp, BernhardBernhard.Knapp (at) dlr.dehttps://orcid.org/0000-0002-5714-7105
Oschwald, MichaelMichael.Oschwald (at) dlr.dehttps://orcid.org/0000-0002-9579-9825
Date:2019
Journal or Publication Title:Progress in Propulsion Physics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:11
DOI :10.1051/eucass/201911391
Page Range:pp. 391-406
Publisher:Torus Press
ISSN:2493-3503
ISBN:978-5-94588-228-7
Status:Published
Keywords:LOX/H2, optical diagnostics
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 - Antriebsystemtechnik - Schubkammertechnologie
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Rocket Propulsion
Deposited By: Hanke, Michaela
Deposited On:13 Dec 2019 13:21
Last Modified:13 Dec 2019 13:21

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