FUSELAGE FLOOR BEARING CARCASS AND ITS SUPPORT BEAM Russian patent published in 2012 - IPC B64C1/18 

FIELD: transport.

SUBSTANCE: invention relates to aircraft engineering, particularly, to fuselage floor carcass and its support beam. Bearing carcass comprises transverse beams secured to fuselage frames, braces, support beams passed along fuselage and transverse beams. Support beam profile in cross section represent I-beam with its top flange provided with rectangular ledge running along beam length and furnished with T-like slot. Ends of top flanges of support beams are jointed to top flanges of transverse beams. Transverse beams represent T-like section furnished with one-sided flange arranged at lower section. Support beams are provided with cutouts with transverse beams passed there through. Support carcass has brackets made from the base and jointed thereto by wall and attachment elements arranged in support beam slot and passed through top flanges of support and transverse beams. Every support beam is additionally jointed with every transverse beam by two brackets arranged on opposite sides of transverse beam wall, their bases being secured to transverse beam wall. Walls of transverse beam are jointed to support beam wall. Braces are arranged at an angle to the plane of aircraft axis of symmetry. Note here that first ends of braces arranged along first side of fuselage are fitted into cutouts of support beams between the bracket base and transverse beam wall.

EFFECT: smaller weight of floor structure.

10 cl, 10 dwg