METHOD OF FABRICATION OF ARMOUR COVER FOR INSERT CHARGE OF COMPOSITE SOLID PROPELLANT FOR ROCKET MOTOR AND HEAT-BARRIER MATERIAL Russian patent published in 2015 - IPC C06B21/00 C06D5/00 

FIELD: weapon and ammunition.

SUBSTANCE: invention relates to rocketry, particularly, to technology of fabrication of armour cover for armouring of insert charge from mixed solid propellant (MSP) for main rocket engine (MRE and to heat-barrier material for fabrication of armour cover. The method of fabrication of armour cover for insert charge from mixed solid propellant includes the formation of its details at high temperature curing in the presses according to charge dimensions from the heat-screening material which is a butadiene-based rubber mix - nitrile rubber, containing resite as a heat-resistant filler amounting 400 wt. parts vs rubber 100 wt. parts. The rubber mix is pre-fabricated on the rollers with the temperature no more than 70°C during rolling and 30-40°C before adding of the cross-linking agent with obtaining of sheets from which the workpieces for formation of armour cover details are stamped. The heat-barrier material for fabrication of armour cover details contains synthetic butadiene - nitrile rubber, the ground sulphur for rubber products and rubbers, white zinc, 2- mercaptobenzothiazole (captax) stearin technical acid, phenol-formaldehyde novolac phenol formaldehyde, technical aminoform, resite and tributyl phosphate.

EFFECT: fabrication of split-type armour cover with complex profile consisting of a pipe and a bottom, and variable thickness along the length from the single-layer isotropic material providing high thermal stability, heat resistance, strength of armour cover and uniform distribution of properties along the volume of products and technological effectiveness of fabrication.

3 cl, 2 tbl