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Technology of the Screw‐Extrusion Process for the manufacture of double‐base rocket propellants
Author(s) -
Homburg A.,
Brachert H.
Publication year - 1977
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.19770020402
Subject(s) - propellant , extrusion , rocket (weapon) , base (topology) , materials science , rocket propellant , process (computing) , mechanical engineering , aerospace engineering , engineering , composite material , computer science , mathematics , operating system , mathematical analysis
Description of a continuous, remote‐controlled and largely automated processing method for double‐base solid propellants for the propulsion of rockets. The base materials are mixed as an aqueous batch and processed into a wet mix paste with concurrent homogenization. Kneading is a continuous and automatic process performed by disc kneaders. Compression to the granulate, as the intermediate product, is also a continuous and automatic two‐stage process performed in twin‐screw extruders with automatic mixing of the batch quantity into a homogeneous product between these two operations. Before the last operation, compression molding, the propellant mix which is continuously dewatered in the various operations, is dried to the moisture content required for the end product and, in the last stage, it is again continuously and automatically compressed in twin‐screw extruders to form the propellant grain. This process is distinguished by the high homogeneity of the end product, high reliability, rational and material‐saving processing and a broad field of application.