SOLID-PROPELLANT CHARGE FOR ROCKET ENGINE AND METHOD OF ITS MANUFACTURE Russian patent published in 2007 - IPC F02K9/10 

FIELD: rocketry.

SUBSTANCE: invention can be used at designing, development and manufacture of solid-propellant charges. Proposed solid propellant charge for rocket engine is made in form grain of solid propellant with central through channel and partially restricted side outer surface. Restriction of side surface of grain is made in form of alternating longitudinal strips on side surface. Length of strips is 0.1 - 1.0 of charge length, and width does not exceed 0.2 of thickness of burning charge dome. Total area of restricting strips corresponds to relationship protected by said invention. Method of manufacture of solid-propellant charge for rocket engine comes to application of restriction coating on side outer surface of charge in form of alternating longitudinal strips. Said strips are formed by applying liquid viscous polymerizing restriction composition to side surface of charge grain using brush and template.

EFFECT: prevention of erosion peak pressure and provision of quick coming of rocket engine to working mode.

5 cl, 5 dwg