FIELD: transport.
SUBSTANCE: aircraft sealed floor section comprises main landing gear hatch, lengthwise beams 1, 20, 30, and sealed bent membranes 9. Every beam 1, 20, 30 comprises top flange 2, vertical neck 3, 21, 31, and bottom flange 3, 22, 32. Bottom flange 4, 22, 32 is furnished with two inclined feet 7, 8, 23, 24, 34, 35 arranged on both sides of vertical neck and provided with bearing surface. Sealed bent membranes 8 are secured on said bearing surface. Beams 1, 20, 30 are made from composite material. Bottom flange 4, 22, 32 has connection element 10, 33 connecting two inclined feet 7, 8, 23, 24, 34, 35 so that said bottom flange has closed section. Bottom flange 4, 22, 32 has reinforcing element 44 arranged inside said closed section. Closed section represents triangle or rhomb.
EFFECT: increased resistance to bending forces.
10 cl, 9 dwg
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