SHIP'S LONGERON Russian patent published in 1999 - IPC

FIELD: shipbuilding and aviation. SUBSTANCE: manufacture of load-bearing structural members for ships, submarines, etc. By rolling, stamping, dewatering, machining, extrusion or powder metallurgy. Ship's longeron has boundary line of section in at least one of cross sections. Over part of length, this line has form of fragment or combination of fragments of oblique taper section of right circular cone. Longeron may have varying linear size in section repeatedly and intermittently increasing and decreasing. Over part of length, boundary line of longeron section may be convex, concave or stepped. Over part of length of boundary line of section, longeron may be provided with recess or projection. Longeron may be provided with at least one inner cavity. Longeron may be made integral with skin and at least one projection and/or recess may be made in conjugation area. EFFECT: improved service characteristics. 16 cl, 24 dwg