FIELD: transport.
SUBSTANCE: invention relates to aircraft engineering, particularly, to aircraft fuel tank. Fuel tank comprises body composed of axially symmetric flange with two bottoms as rotational shell, gas supercharge and fuel feed unions and two stiff diaphragms composed of rotational shells in contact via end section flanging with tank flange. Central section of every diaphragm is bulged towards tank bottom with radius equal thereto. Peripheral section of every diaphragm is concaved relative to appropriate tank bottom. Sum of areas of diaphragm sections and flanging area equal surface area of every tank bottom. Note also that said diaphragms make fuel chambers with appropriate tank bottom and gas chamber with the flange.
EFFECT: decreased weight.
1 dwg
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