FIELD: cooling fans for internal-combustion engines of vehicles. SUBSTANCE: fan has aerodynamic airfoil blades; sectional areas of motor fastening posts are, essentially, aerodynamic airfoils for which location of center lines relative to those of impeller are found from definite equations given in description of invention; line interconnecting centers of sectional areas of posts is logarithmic spiral inclined in direction of impeller rotation. EFFECT: improved efficiency and reduced noise of fan. 2 cl, 4 dwg
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