FIELD: rocket equipment.
SUBSTANCE: invention relates to rocket engineering, particularly, to rocket engines with inner surface heat-insulating coating. Solid-propellant rocket engine comprises a shell of combustion chamber, front and rear bottoms with heat-protective coating on surface and solid fuel charge. Shell of combustion chamber has collar attached to it. In area of docking assembly of rear bottom with shell of combustion chamber heat-insulating coating of rear bottom has protruding part, repeating inner surface of cuff with formation of stagnation zone, and contains from side of solid fuel additionally applied layer of coal-cloth.
EFFECT: invention increases erosion resistance of the heat-insulating coating in the area of the docking assembly of the combustion chamber of the rear bottom.
1 cl, 1 dwg
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