IGNITION OF SOLID-PROPELLANT CHARGE AND SOLID-PROPELLANT ROCKET ENGINE TO THIS END Russian patent published in 2014 - IPC F02K9/95 

FIELD: engines and pumps.

SUBSTANCE: at ignition of solid propellant charge, the ignition composition is fired, combustion products are displaced along charge surface to heat the latter and to ignite it. Firing of igniter composition is made in steps using the combustion products of fired portion of said composition for displacement and distribution of not ignited composition over the free volume. Igniter composition combustion products nearby the charge surface accelerate and create the area with turbulent flow mode. Another invention of the set relates to rocket engine including combustion chamber, charge with unarmoured nozzle end and igniter arranged in chamber composed of charge unarmoured nozzle end recess in nozzle bottom opposite the electric primer. Igniter is composed of several packages of combustible material accommodated in igniter composition, one above the other, and locked therein by splitter. Said splitter is made of resilient material and arranged between unarmoured nozzle end and nozzle bottom opposite the electric primer. Said chamber is communicated with antenozzle volume via circular gas duct arranged in outer diameter of nozzle bottom.

EFFECT: higher reliability of ignition.

4 cl, 3 dwg