FIELD: fans.
SUBSTANCE: invention relates to fans and can be used, for example, in industrial power engineering, in particular in cooling towers and presumably in aviation for regulating the lift of aircraft.
EFFECT: feature of the newly proposed fan is that the support part is provided with turbine crowns consisting of two rows of forward and backward blades and comprises nozzle devices fixed to the support part, the nozzle devices being provided with pivoting sleeves and windows.
1 cl, 3 dwg
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