FIELD: power and transport engineering. SUBSTANCE: envelope of vane is made from separate hollow cylindrical profile members ensuring discrete twisting of vane envelope profile. Angle of turn of members relative to each other and their thickness depend on geometric characteristics of vane. At least one detachable joint provided between members is located in zone of maximum radial temperature nonuniformity of gas flow. Metal strainers are located in inner cavity of envelope; strainers are provided with individual twin shield made from foil in form of spiral. EFFECT: enhanced reliability. 4 cl, 3 dwg
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