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Propellant Atomization for Porous Injectors

Deeken, Jan C. and Suslov, Dmitry and Oschwald, Michael and Schlechtriem, Stefan and Haidn, Oskar (2019) Propellant Atomization for Porous Injectors. Journal of Propulsion and Power, 35 (6), pp. 1116-1126. American Institute of Aeronautics and Astronautics (AIAA). DOI: 10.2514/1.B37569 ISSN 0748-4658

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Abstract

Porous injectors represent an alternative injection concept to coaxial injectors for rocket engine applications using gas/liquid propellant combinations such as liquid oxygen (LOX)/hydrogen (H2). This paper summarizes the main design features of porous injectors and proposes a mechanism of atomization for porous injectors that is considerably different to the atomization mechanism for coaxial injectors. The results of hot-fire test campaigns are presented, in which several parameters relevant to the injection process were varied: the injection velocities and momentum fluxes, the combustion chamberMach number at the beginning of the nozzle contraction, and the LOX injector diameter. All hot-fire tests were conducted at P8 test facility for high pressure combustion research at the DLR site of Lampoldshausen with 50-mm-diameter combustion chambers operated with LOX∕H2 at sub- and supercritical chamber pressures between 30 and 100 bar. The results presented here are supporting the proposed mechanism of atomization and allow derivation of some general design guidelines for porous injectors.

Item URL in elib:https://elib.dlr.de/130976/
Document Type:Article
Title:Propellant Atomization for Porous Injectors
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Deeken, Jan C.Jan.Deeken (at) dlr.dehttps://orcid.org/0000-0002-5714-8845
Suslov, DmitryDmitry.Suslov (at) dlr.dehttps://orcid.org/0000-0002-5160-9292
Oschwald, MichaelMichael.Oschwald (at) dlr.dehttps://orcid.org/0000-0002-9579-9825
Schlechtriem, StefanStefan.Schlechtriem (at) dlr.dehttps://orcid.org/0000-0002-3714-9664
Haidn, OskarTechnical University of Munich, DUNSPECIFIED
Date:2019
Journal or Publication Title:Journal of Propulsion and Power
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:35
DOI :10.2514/1.B37569
Page Range:pp. 1116-1126
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
ISSN:0748-4658
Status:Published
Keywords:porous injection, API
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:26 Nov 2019 08:22
Last Modified:26 Nov 2019 08:22

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