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International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.149 SNIP: 0.16 CiteScore™: 0.29

ISSN Imprimir: 2150-766X
ISSN En Línea: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.v9.i1.60
pages 91-105

AGGREGATION VERSUS AGGLOMERATION IN METALLIZED SOLID ROCKET PROPELLANTS

Luigi T. DeLuca
Space Propulsion Laboratory (SPLab), Department of Aerospace Science and Technology, Politecnico di Milano, Milan, I-20156, Italy
Elisa Marchesi
SPLab, Department of Aerospace Engineering, Politecnico di Milano, Italy
Marco Spreafico
SPLab, Department of Aerospace Engineering, Politecnico di Milano, Italy
Alice Reina
SPLab, Space Propulsion Laboratory, Aerospace Engineering Department, Politecnico di Milano, 34 via la Masa, 20156 Milan, Italy
Filippo Maggi
SPLab, Space Propulsion Laboratory, Aerospace Engineering Department, Politecnico di Milano, 34 via la Masa, 20156 Milan, Italy
Luca Rossettini
SPLab, Department of Aerospace Engineering, Politecnico di Milano, Italy
Alessio Bandera
SPLab, Dipartimento di Ingegneria Aerospaziale, Politecnico di Milano, Italy
Luigi Pietro Maria Colombo
SPLab, Department of Aerospace Engineering, Politecnico di Milano, Italy
Bernard M. Kosowski
MACH I, Inc., King of Prussia, PA 19406, USA

SINOPSIS

Several heterogeneous solid rocket propellants, of the broad family AP/metal/HTPB, were experimentally analyzed at the Space Propulsion Laboratory of Politecnico di Milano in cooperation with MACH I Inc. In general, they feature the same nominal composition, but different metals are investigated as fuel powders and contrasted to a conventional micrometric aluminum (30 μm average grain size) taken as reference. Although the metal oxidation process follows a common set of events, aggregation and agglomeration phenomena near the burning surface may be noticeably different depending on the enforced operating conditions and details of the solid propellant formulation. Understanding of these effects opens the path to improved ballistic performance.


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