METHOD OF MANUFACTURE OF SHELLS WITH INTERNAL RADIAL CAVITIES Russian patent published in 2003 - IPC

FIELD: manufacture of load-bearing structures with radial cavities by winding tape impregnated with binder on mandrel followed by cooling in hydraulic chamber. SUBSTANCE: proposed method includes winding the tape on mandrel provided with radial projections; stack with taper end surface is made near projections; angle of inclination of this plane to end surfaces of projections selected from range of 90 to 110 deg. Then, tape is wound on said stack and projections of mandrel overlapping gap between them, thus making it possible to obtain optimal structure during hardening under pressure and enhance strength. EFFECT: enhanced efficiency and strength. 2 cl, 4 dwg