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The Hypergolic Reaction Between the Green Ionic Liquid EMIM SCN and Hydrogen Peroxide in a Lab-Scale Drop Test Chamber

Stützer, Robert and Balkenhohl, Jakob and Lauck, Felix and Oschwald, Michael and Schlechtriem, Stefan (2022) The Hypergolic Reaction Between the Green Ionic Liquid EMIM SCN and Hydrogen Peroxide in a Lab-Scale Drop Test Chamber. International Journal of Energetic Materials and Chemical Propulsion, 1, pp. 87-100. Begell House. doi: 10.1615/IntJEnergeticMaterialsChemProp.2021038219. ISSN 2150-766X.

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Official URL: https://www.dl.begellhouse.com/journals/17bbb47e377ce023,569acf27247a762c,77fba1f73d959879.html#

Abstract

The hypergolic reaction between the recently developed green propellant combination consisting of an ionic liquid and highly concentrated hydrogen peroxide was investigated for various fuel to oxidizer ratios and heights of fall. The influence of the catalytic copper additive on the ignition delay time (IDT) was analyzed. Flame emission/absorption spectroscopy revealed the chemical constituents. All emission spectra were dominated by the sodium D-lines at a wavelength of lambda = 589 nm. Further lines of alkali metals such as lithium and potassium were found. The copper additive showed its characteristic lines according to its amount in the fuel. Emission spectra of the ultraviolet regime showed the characteristic OH* molecular lines around a wavelength of lambda = 306 nm with its temperature dependent intensity ratios. The catalytic additive copper (I) thio-cyanate (CuSCN) increases the temperature of the OH* molecule in the flame while it decreases the IDT from 31 ms for pure ionic liquid to 15 ms (5% mass percentage).

Item URL in elib:https://elib.dlr.de/185925/
Document Type:Article
Title:The Hypergolic Reaction Between the Green Ionic Liquid EMIM SCN and Hydrogen Peroxide in a Lab-Scale Drop Test Chamber
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Stützer, RobertRobert.Stuetzer (at) dlr.dehttps://orcid.org/0000-0003-4136-8496
Balkenhohl, JakobInstitut für Raumfahrtantriebe, DLR Lampoldshausen, DUNSPECIFIED
Lauck, FelixFelix.Lauck (at) dlr.deUNSPECIFIED
Oschwald, MichaelMichael.Oschwald (at) dlr.dehttps://orcid.org/0000-0002-9579-9825
Schlechtriem, StefanStefan.Schlechtriem (at) dlr.dehttps://orcid.org/0000-0002-3714-9664
Date:15 January 2022
Journal or Publication Title:International Journal of Energetic Materials and Chemical Propulsion
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:1
DOI :10.1615/IntJEnergeticMaterialsChemProp.2021038219
Page Range:pp. 87-100
Publisher:Begell House
ISSN:2150-766X
Status:Published
Keywords:Hypergolic Ignition, Combustion, Droplet Test Chamber, Spectroscopy
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transportation
DLR - Research area:Raumfahrt
DLR - Program:R RP - Space Transportation
DLR - Research theme (Project):R - Reusable Space Systems and Propulsion Technology
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion
Institute of Space Propulsion > Rocket Propulsion Technology
Institute of Space Propulsion > Rocket Propulsion
Institute of Space Propulsion > Propellants
Deposited By: Stützer, Dr. Robert
Deposited On:30 Mar 2022 07:13
Last Modified:30 Mar 2022 07:13

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