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A Method for Screening and Identification of Green Hypergolic Bipropellants

Kurilov, Maxim and Kirchberger, Christoph and Stiefel, Alexander and Ciezki, Helmut (2018) A Method for Screening and Identification of Green Hypergolic Bipropellants. International Journal of Energetic Materials and Chemical Propulsion. Begell House. ISSN 2150-766X.

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As of now, the most widely used hypergolic fuels are hydrazine derivates with nitrogen tetroxide as the oxidizer. The toxicity and carcinogenic character of these substances make their handling challenging even if gelled. Therefore, there is great interest throughout the propulsion community in finding alternatives for these substances. However, despite a thorough literature review, clear selection criteria for 'green' hypergols could not be found. To tackle this issue, we developed a set of key requirements and criteria for propellant selection. The major drivers were hypergolic ignitability, propellant performance, reduced toxicity, and economic factors. Then we used these criteria to carry out a screening aimed at identifying potential oxidizers, fuels, and additives. Hypergolicity was assessed by capturing ignition events of a simple drop test experiment with a high-speed camera. This setup allowed us to find a set of promising novel hypergolic propellants and to verify our screening method. Not only do liquid and gelled diamine fuels with hydrogen peroxide as the oxidizer provide 96% of the specific impulse of the monomethylhydrazine/nitrogen tetroxide propellant system, but they also feature ignition delay times on the order of 15 ms.

Item URL in elib:https://elib.dlr.de/126416/
Document Type:Article
Title:A Method for Screening and Identification of Green Hypergolic Bipropellants
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Kurilov, MaximMaxim.Kurilov (at) dlr.dehttps://orcid.org/0000-0003-0256-7126
Kirchberger, ChristophChristoph.Kirchberger (at) dlr.dehttps://orcid.org/0000-0002-7574-2581
Stiefel, AlexanderAlexander.Stiefel (at) dlr.deUNSPECIFIED
Ciezki, HelmutHelmut.Ciezki (at) dlr.dehttps://orcid.org/0000-0002-1539-4677
Journal or Publication Title:International Journal of Energetic Materials and Chemical Propulsion
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Publisher:Begell House
Keywords:gel propellant, green propellants, green hypergolics, hydrogen peroxide, diamine, ignition delay time, propellant screening and selection
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):Grüne Geltreibstoffe für Raumfahrtrelevante Anwendungen (GGeRA) (old), Project Future Fuels (old)
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Propellants
Deposited By: Kurilov, Maxim
Deposited On:07 Feb 2019 08:08
Last Modified:14 Dec 2019 04:23

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