COMPOSITE SOLID PROPELLANT CHARGE Russian patent published in 2013 - IPC F02K9/28 

FIELD: engines and pumps.

SUBSTANCE: composite solid propellant charge comprises head and nozzle half-charges fixed to the body. The rear end of the head half-charge is perforated with dead holes evenly arranged on two concentric circumferences. Holes with depth of 1.2 of the maximum thickness of the half-charge web that are nearest to the channel are distant from the channel at the distance of 0.21-0.22 of the maximum thickness of half-charge web. Holes that are distant from the channel with depth equal to the maximum thickness of the half-charge thickness are distant from the previous holes at the distance equal to the doubled distance, by which the holes nearest to the channel are distant from the half-charge channel. In the nozzle half-charge, at the length equal to 0.65-0.7 of the nozzle half-charge length there are slots that increase by height to the rear end of up to 0.9 of the maximum thickness of the half-charge web.

EFFECT: invention makes it possible to increase coefficient of combustion chamber filling with fuel.

3 dwg