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FEASIBILITY STUDY OF PARAFFIN-BASED FUELS FOR HYBRID ROCKET ENGINE APPLICATIONS

Kobald, Mario and Ciezki, Helmut and Toson, E. and Cavanna, E. and De Luca, L. and Consolati, G. (2014) FEASIBILITY STUDY OF PARAFFIN-BASED FUELS FOR HYBRID ROCKET ENGINE APPLICATIONS. International Journal of Energetic Materials and Chemical Propulsion, 13 (6), pp. 559-572. Begell House. ISSN 2150-766X

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Abstract

This paper describes a combined analysis performed in pure waxes and paraffin-based mixtures that can be used as solid fuels in hybrid rocket engines. Density easurements of pure waxes were performed using a dilatometer. An experimental facility was set up and, after preliminary measurements and calibration, a repeatable procedure was implemented. The implemented istrumentation setup allowed the measure of density in softening and melting intervals. Mechanical uniaxial tensile tests were performed according to Standard ISO 527-1 on pure macro paraffin and microcrystalline wax and on these waxes doped with stearic acid and graphite; elastic modulus, elongation and maximum stress were calculated. Data indicate that ductile rupture is achievable even on pure tested macro paraffin. Moreover, microcrystalline wax was mixed with a synthetic wax characterized by a higher nominal melting temperature in order to improve the softening point up to higher temperatures without compromising regression rate values. Thermal, rheological, viscosimetric, and ballistic experiments were performed on this new fuel formulation. This new formulation is promising for propulsion applications in wide temperature ranges.

Item URL in elib:https://elib.dlr.de/94015/
Document Type:Article
Title:FEASIBILITY STUDY OF PARAFFIN-BASED FUELS FOR HYBRID ROCKET ENGINE APPLICATIONS
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kobald, MarioMario.Kobald (at) dlr.dehttps://orcid.org/0000-0002-1708-3944
Ciezki, HelmutHelmut.Ciezki (at) dlr.deUNSPECIFIED
Toson, E.Politecnico di Milano, Aerospace Eng.UNSPECIFIED
Cavanna, E.Politecnico di Milano, Aerospace Eng.UNSPECIFIED
De Luca, L.Politecnico di Milano, Aerospace Eng.UNSPECIFIED
Consolati, G.Politecnico di Milano, Aerospace Eng.UNSPECIFIED
Date:2014
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:13
Page Range:pp. 559-572
Publisher:Begell House
ISSN:2150-766X
Status:Published
Keywords:experimental, density, dilatometer, thermal, viscosity, rheology, mechanical, ballistic, micro, macro
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 - Vorhaben ForTrAS - Fortschrittliche Treibstoffe für Anwendungen im Satellitenbereich
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Propellants
Deposited By: Hanke, Michaela
Deposited On:09 Jan 2015 11:24
Last Modified:14 Dec 2019 04:23

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