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Hypergolic Ignition Investigations with an Impinging Injector of an Ionic Liquid Fuel with Hydrogen Peroxide

Lauck, Felix and Witte, Jan and Negri, Michele and Werling, Lukas and Schlechtriem, Stefan (2022) Hypergolic Ignition Investigations with an Impinging Injector of an Ionic Liquid Fuel with Hydrogen Peroxide. Space Propulsion 2022, 09.-13. Mai 2022, Estoril, Portugal.

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Abstract

Conventional hypergolic propellants as e.g. MMH/NTO are highly toxic. Therefore, research is conducted to find suitable, less toxic propellant candidates as replacement. At DLR a hypergolic propellant combination comprised of highly concentrated hydrogen peroxide and an ionic liquid, so-called HIP_11, was identified and the hypergolic ignition was verified with drop tests. In the present investigation, first results of the hypergolic ignition of HIP_11 under flowing conditions are presented. A 2-on-1 impinging jet injector was designed, manufactured and tested in a dedicated hypergolic ignition test setup. The ignition was studied underdifferent injection conditions. The average ignition delay time ranged between 7.8 ms and 4.9 ms depending on the operating point. Also, a continuous combustion over a wide range of operating conditions was observed. As a result, HIP_11 is able to produce fast and reliable hypergolic ignitions and to sustain the combustion. Therefore, it is a very promising candidate for the substitution of conventional hypergolic propellants.

Item URL in elib:https://elib.dlr.de/187226/
Document Type:Conference or Workshop Item (Speech)
Title:Hypergolic Ignition Investigations with an Impinging Injector of an Ionic Liquid Fuel with Hydrogen Peroxide
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Lauck, FelixFelix.Lauck (at) dlr.dehttps://orcid.org/0000-0002-6599-0805
Witte, JanInstitut für Raumfahrtantriebe, DLR Lampoldshausen, DUNSPECIFIED
Negri, MicheleMichele.Negri (at) dlr.dehttps://orcid.org/0000-0003-2204-9916
Werling, LukasLukas.Werling (at) dlr.dehttps://orcid.org/0000-0003-4353-2931
Schlechtriem, StefanStefan.Schlechtriem (at) dlr.dehttps://orcid.org/0000-0002-3714-9664
Date:9 May 2022
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:hydrogen peroxide, hypergolic, ionic liquid, injector, ignition, green propellant
Event Title:Space Propulsion 2022
Event Location:Estoril, Portugal
Event Type:international Conference
Event Dates:09.-13. Mai 2022
Organizer:3AF
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 - Agile development of advanced rocket propulsion systems
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion
Deposited By: Lauck, Felix
Deposited On:04 Jul 2022 07:50
Last Modified:04 Jul 2022 07:50

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