METHOD OF DETERMINING COMBUSTION RATE OF SOLID ROCKET FUEL Russian patent published in 2016 - IPC F02K9/96 

FIELD: rocketry.

SUBSTANCE: invention relates to rocketry and can be used for determining burning speed of solid rocket fuel at stationary and variable pressure in combustion chamber. Method includes preparation, installation and combustion of cylindrical sample of solid rocket fuel in combustion chamber, having a recording system pressure and pressure feed and discharge valves, making notches on specimen surface, firing sample, maintaining and pressure control in chamber at level of specified, determining combustion speed by based on design ratios. Pressure maintenance and control is performed automatically, and combustion of sample is performed in combustion chamber filled before combustion with inert gas, compressed to required level. Prior to mounting on tested sample, on side of outer cylindrical surface, at fixed distances from front end of sample in a radial direction using blade cutters, are made two or more circular radial notches and sample is then plated on cylindrical surface, wherein notches are made at beginning and of each control section. Combustion rate of solid rocket fuel is determined on control section of burning body of sample based on design ratios.

EFFECT: invention improves accuracy of determining combustion rate of solid rocket fuel.

1 cl, 5 dwg, 1 tbl