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Influence of Water Content in an ADN Based Liquid Monopropellant on Performance Characteristics

Hendrich, Ch. and Gernoth, A. and Ciezki, H. and Schlechtriem, S. and Wingborg, N. and Scharlemann, C. (2014) Influence of Water Content in an ADN Based Liquid Monopropellant on Performance Characteristics. Space Propulsion 2014, 2014-05-19 - 2014-05-22, Cologne, Germany.

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Hydrazine is advantageous for attitude control systems of satellites because it is space storable for long times and the developed thrusters are reliable for long term operations. Unfortunately hydrazine is very difficult to handle on ground due to its very high toxicity. Especially with regard to the REACH regulation of the European Community, which has passed some years ago, Hydrazine is on the candidate list of substances whose use could be limited in future. Thus strong research efforts have to be conducted today to find and to qualify alternative propellants, which have significantly simpler handling characteristics, are less toxic, environmentally benign and have similar or even better performance characteristics. One of the most promising candidates to replace hydrazine is the ADN based ionic liquid FLP-106, which is a monopropellant and has been developed by FOI. This monopropellant has a higher Isp in comparison to hydrazine and to LMP-103S which is currently used by the ECAPS company from Sweden. Also FLP-106 has a lower vapor pressure than LMP-103S. Thrusters using ionic liquid propellants are working with heated catalysts to decompose the propellant. One of the main drawbacks of this design is the lack of cold-start capability. Additionally, the high combustion temperature is a concern, possibly requiring high-temperature alloys like Iridium/Rhenium. FLP-106 consists of 64.6 % ADN (ammonium dinitramide), 23.9 % water and 11.5 % of a low volatile hydrocarbon fuel. In order to use simpler materials with lower melting points the combustion temperature of FLP-106 can be decreased by increasing the water content in the propellant. However, the increased water content will decrease the specific impulse and may also influence the ignition properties.

Item URL in elib:https://elib.dlr.de/91653/
Document Type:Conference or Workshop Item (Speech)
Title:Influence of Water Content in an ADN Based Liquid Monopropellant on Performance Characteristics
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Wingborg, N.Swedish Defence Research Agency, StockholmUNSPECIFIEDUNSPECIFIED
Scharlemann, C.Univ. of Applied Sciences, Wiener NeustadtUNSPECIFIEDUNSPECIFIED
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:ADN, green propellants
Event Title:Space Propulsion 2014
Event Location:Cologne, Germany
Event Type:international Conference
Event Start Date:19 May 2014
Event End Date:22 May 2014
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 - Vorhaben ForTrAS - Fortschrittliche Treibstoffe für Anwendungen im Satellitenbereich (old)
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Propellants
Deposited By: Hanke, Michaela
Deposited On:10 Nov 2014 08:49
Last Modified:24 Apr 2024 19:57

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