METHOD TO MANUFACTURE A CHARGE OF ROCKET SOLID PROPELLANT MIXTURE Russian patent published in 2004 - IPC

FIELD: manufacture of rocket solid propellant charges. SUBSTANCE: the invention presents a method to manufacture a charge of rocket solid propellant mixture (RSPM). The offered method to manufacture a charge of rocket solid propellant mixture includes a batching of components, their mixing to obtain a propellant mass, to form and cure the charge. At that in the process of forming a charge they take a probe of the propellant mass; form a test sample from it and place the sample in a mould with the measuring bar, then the sample is subjected to thermostatting and the measuring bar is periodically in the fixed time instants being turned at an angle within the limits of the test sample elasticity so creating a shear strain in the test sample. Then they measure the shear modulus of the propellant till its value achieves a permanent figure. To determine the value of time duration required for the propellant curing process completion on the test sample they using the obtained data calculate a curing degree factor and on the base of the obtained time value of the propellant curing process completion they determine the time value required for the charge curing and let the charge curing up to achievement of the curing factor degree of 0.85-1.0. EFFECT: the invention allows to control a RSPM charge curing process degree in process of its curing, to increase safety and decrease the charge production cycle duration. 2dwg, 1 tbl