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OPTICAL CHARACTERIZATION OF THE LASER-INDUCED IGNITION SPARK IN A CRYOGENIC ROCKET COMBUSTOR

Stützer, Robert and Börner, Michael and Oschwald, Michael (2019) OPTICAL CHARACTERIZATION OF THE LASER-INDUCED IGNITION SPARK IN A CRYOGENIC ROCKET COMBUSTOR. International Journal of Energetic Materials and Chemical Propulsion, 17 (4), pp. 337-347. Begell House. DOI: 10.1615/IntJEnergeticMaterialsChemProp.2019027786 ISSN 2150-766X

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Official URL: http://dl.begellhouse.com/journals/17bbb47e377ce023,1435446d5e7d36e1,263885b24bd09661.html

Abstract

Experiments at the European Research and Technology Test Bench P8, located at the DLR Institute of Space Propulsion, were carried out to validate the feasibility of laser ignition on the research rocket combustor "BKA". Propellant injection in BKA was carried out via 15 coaxial injectors with liquid oxygen as oxidizer and gaseous hydrogen or gaseous methane as fuel. Crucial parameters such as the equivalence ratio between oxidizer and fuel (ROF), plasma temperature, ignition delay time, and breakdown threshold can be determined using appropriate methods for plasma analyses. The research rocket combustion chamber "Brennkammer A" (BKA) was equipped with a laser ignition facility and with the opportunity to evaluate the optical emission of the ignition spark. Furthermore, a laboratory-scale cavity, filled with well-defined samples, was used to analyze the plasma lifetime of gaseous samples of known properties. Thus, the local ROF inside the ignition kernel was derived.

Item URL in elib:https://elib.dlr.de/131332/
Document Type:Article
Title:OPTICAL CHARACTERIZATION OF THE LASER-INDUCED IGNITION SPARK IN A CRYOGENIC ROCKET COMBUSTOR
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Stützer, RobertRobert.Stuetzer (at) dlr.dehttps://orcid.org/0000-0002-0049-9142
Börner, MichaelMichael.Boerner (at) dlr.dehttps://orcid.org/0000-0002-3441-2869
Oschwald, MichaelMichael.Oschwald (at) dlr.dehttps://orcid.org/0000-0002-9579-9825
Date:2019
Journal or Publication Title:International Journal of Energetic Materials and Chemical Propulsion
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:17
DOI :10.1615/IntJEnergeticMaterialsChemProp.2019027786
Page Range:pp. 337-347
Publisher:Begell House
ISSN:2150-766X
Status:Published
Keywords:laser ignition, laser-induced breakdown spectroscopy, LIBS, plasma, combustion, space propulsion, rocket combustor, ignition
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:20 Dec 2019 08:49
Last Modified:01 Jan 2020 03:00

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