FIELD: rocketry; powder engines.
SUBSTANCE: proposed method of manufacture of powder rocket engine case includes multiple drawing of round blank and machining of round blank surface before drawing. Round at blank at cutting is formed with arc section. Then round blank is straightened by pressing its convex side to plane by means of pressure ring. Round blank is fixed in straightened state by nut. Pressure ring is removed and central part of round blank is machine. Then blank is again pressed by pressure ring, nut is removed and surface of blank is machined over edge of circle. Drawing is done with round blank orientated with its machined surface inwards.
EFFECT: reduced cost of manufacture of powder rocket engine case.
3 cl, 2 dwg
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