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International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.28 SNIP: 0.421 CiteScore™: 0.9

ISSN Imprimer: 2150-766X
ISSN En ligne: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.2012001388
pages 107-121

EXPERIMENTAL INVESTIGATION OF METALIZED SOLID FUEL RAMJET COMBUSTOR

Shimon Saraf
Faculty of Aerospace Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel
Alon Gany
Sylvia and David IA Fine Rocket Propulsion Center and the Aerothermodynamics Lab, Faculty of Aerospace Engineering, Technion – Israel Institute of Technology, Haifa, 3200003, Israel

RÉSUMÉ

This article presents an experimental investigation of metalized and non-metalized solid fuel ramjet combustors. The research is motivated by previous theoretical studies that suggest metals such as aluminum, magnesium, and zirconium can provide much higher heat release per unit mass of air; hence, increasing the specific thrust (i.e., thrust per unit airflow rate) of the engine (in this study aluminum particles were added to the fuel). A hydrogen vitiated air heater was used to simulate in a static test facility the incoming air stagnation properties of about Mach 3 flight at sea level. Ignition and stable combustion of both metalized and non-metalized fuels have been achieved. The results show that the regression rate of the fuel containing aluminum particles is slightly higher, generating a higher fuel mass flow rate. The addition of aluminum particles has improved the specific thrust while decreasing the specific impulse, with a good correlation to the theoretical calculations.


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