METHOD OF ARMORING OF THE SOLID PROPELLANT CHARGES (VERSIONS) Russian patent published in 2008 - IPC B29C45/14 C06B21/00 

FIELD: chemical industry; other industries; method of armoring of the solid propellant charges.

SUBSTANCE: the invention is pertaining to the field of armoring of the solid propellant charges used for the rocket engines and other devices and may be used at their finishing operations and at manufacture of the charges of the solid propellant. The method provides for deposition of the adhesiveness underlayer on the propellant grain and placing the grain in the press mold. The armoring composition is heated up to the yield state and injected into the space between the press mold die and the propellant grain. According to the first version the propellant grain with the deposited adhesive underlayer before placing in the press mold is thermostated at the temperature from the "dew point" up to 20°С. The thermostating is exercised during the time sufficient for the uniform distribution of the preset temperature over the whole volume of the propellant grain. Then the grain is set in the press mold and exercise the armoring process. The "dew point" temperature before placing the propellant grain for the thermostating is determined with consideration of the temperature and humidity of the surrounding atmospheric air in the industrial premise used for armoring of the charges. The second version provides, that the adhesive underlayer is deposited on the propellant grain after its thermostating at the indicated temperature before its placing into the press mold. The invention allows to raise the quality and safety of the propellant charge armoring process.

EFFECT: the invention ensures the improved quality and safety of the propellant charge armoring process.

2 cl, 3 dwg