Results 161 to 170 of about 37,522 (203)

Thermal Stability of Jet-Fuel/Paraffin Blends

Energy & Fuels, 1996
The thermooxidative stability of blends of a straight-run Jet-A fuel (POSF-2827) and a paraffinic/cycloparaffinic solvent (Exxsol D-80) has been studied in a single-pass tubular heat exchanger operated isothermally at 185 °C. Autoxidation of most blends is found to be significantly slower than that of either fuel or solvent. Surface fouling relative to
Lori M. Balster, Walter J. Balster, E. Grant Jones   +2 more
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Settling of paraffin crystals in cooled middle distillate fuels

Journal of Colloid and Interface Science, 2004
The mechanism of action of additives that control the sedimentation of paraffin crystals after their crystallization in model diesel oil has been studied by means of a new experimental approach. The chemical analysis of the crystals and detailed measurements of the sedimentation phenomenon give new insights into this complex process.
Marie, Emmanuelle, Chevalier, Yves, Brunel, Sylvain, Eydoux, Franck, Germanaud, Laurent, Flores, Philippe   +5 more
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Evaluation of Paraffin-based Fuels for Hybrid Rocket Engines

50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, 2014
This paper summarizes the investigations on the combustion behavior of paraffin-based hybrid rocket fuels with gaseous oxygen (GOX) as oxidizer. Combined experimental activities have been done at the DLR Institute of Space Propulsion in Lampoldshausen and at the Space Propulsion Laboratory (SPLab) of Politecnico di Milano.
Kobald, Mario, Schmierer, C., Ciezki, Helmut, Schlechtriem, S., Toson, E., De Luca, T.   +5 more
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A paraffin-fueled SOFC system design and integration

Journal of the Chinese Institute of Chemical Engineers, 2007
Abstract This paper addresses an integrated design of paraffin-reformer, gas separations and the electricity production with a solid oxide fuel cell (SOFC). The overall design consists of three modules. First module is a system of paraffin reformer. In this module, the paraffin feed stream is to send to a steam-reformer. In the second module, the gas
Hsi-Jen Chen, Shan-Huei Yang, Shun-Hsing Huang, Y.P. Chyou   +3 more
openaire   +1 more source

Study on Mechanical Characteristics of Paraffin-Based Fuel

47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2011
The paraffin-based fuel has high fuel regression rate of 3 to 4 times in comparison with a conventional hybrid rocket fuel. However, the paraffin-based fuel has the problem in manufacturing because of their low tensile strength, bonding method inside the fuel cartridge and shrinkage.
Shinya Maruyama, Takafumi Ishiguro, Keiji Shinohara, Ichiro Nakagawa   +3 more
openaire   +1 more source

Mechanical Characterization of Paraffin-Based Hybrid Rocket Fuels

Materials Today: Proceedings, 2019
Abstract The present work focuses on determination of the mechanical properties of paraffin-based hybrid rocket fuels. The tensile tests were performed to evaluate the ultimate tensile strength, elastic modulus and percentage elongation at break. Three classes of paraffin-based fuels such as Paraffin/Polyethylene (P/PE), Paraffin/Polyethylene/Boron ...
Yash Pal, V. Ravikumar
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Paraffin-based Fuels and Energetic Additives for Hybrid Rocket Propulsion

51st AIAA/SAE/ASEE Joint Propulsion Conference, 2015
Energetic additives for hybrid rocket propulsion, investigated at the Space Propulsion Laboratory (SPLab) of Politecnico di Milano, are discussed in this paper in order to estimate the potential increase of hybrid rocket performance. Traditional HTPB-based and paraffin-based fuels are considered, with special emphasis to the second ones.
BOIOCCHI, MATTEO, PARAVAN, CHRISTIAN, DOSSI, STEFANO, MAGGI, FILIPPO, COLOMBO, GIOVANNI, GALFETTI, LUCIANO   +5 more
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Oxidation of Neat Synthetic Paraffinic Kerosene Fuel and Fuel Surrogates: Quantitation of Dihydrofuranones

Energy & Fuels, 2013
Thermal stressing experiments on a modified surrogate fuel and synthetic paraffinic kerosene (SPK) have been carried out under both static and dynamic conditions at 140 °C. In order to characterize the oxidation products, some key degradation compounds were monitored throughout the stressing experiment.
Renée L. Webster, David J. Evans, Paul M. Rawson, Blagoj S. Mitrevski, Philip J. Marriott   +4 more
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Ballistic and mechanical characteristics of paraffin-based solid fuels

CEAS Space Journal, 2019
In a hybrid rocket, paraffin-based fuels are characterised by high regression rates and zero chemical explosion potential. However, paraffin wax is a brittle material and exhibits poor mechanical strength. The production of large-scale paraffin motors is a challenging task because of the poor structural performance of such motors.
Yash Pal, K. Harish Kumar, Yueh-Heng Li
openaire   +1 more source

Development and testing of paraffin-based hybrid rocket fuels

37th Joint Propulsion Conference and Exhibit, 2001
The classical hybrid combustion theory is generalized to solid fuels that form a liquid layer on their burning surface. For several classes of liquefying fuels, the layer is hydrodynamically unstable leading to substantial droplet entrainment from the melt layer into the gas stream.
M. Karabeyoglu, B. Cantwell, D. Altman
openaire   +1 more source