FIELD: rocketry and space engineering; engine plants of upper stages and launch vehicle stages. SUBSTANCE: tank includes smooth shell with load-bearing truss mounted inside and outside. Truss is connected with upper and lower load-bearing members fitted on shell. This truss mainly takes up compressive which are not compensated for by pressure of tank pressurization. This, shell is practically not loaded with such forces. EFFECT: reduced mass and low cost of manufacture. 2 cl, 1 dwg
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