Base Bleed Solid Propellants Containing Thermoplastic Elastomers as Binders
FRAUNHOFER-INST FUER TREIB- UND EXPLOSIVSTOFFE PFINZTAL-BERGHAUSEN (GERMANY F R)
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For the manufacture of base bleed gas generator propellant charges, propellants were developed which contained as binders thermoplastically moldable elastomers of the butadiene- and isoprene-styrene three block copolymer type. The present paper gives a description of the production of propellant granules from the oxidizer and the copolymer as well as of the compression molding of this material to form base bleed propellant charges. Moreover, reference is being made to the procedure of insulation of propellant charges with a thermoplastic elastomer of the same type. This new type of solid propellants is described by its mechanical, ballistic and physical properties and by its safety aspects. Finally, some considerations are being made with regard to a production of these propellants on a commercial scale.
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