Abstract
The work is devoted to development issue of construction of working wheel blades satisfying conditions of strength when peripheral speed at end of the blades is more than 140 m/s. Due to high rotational speeds cast blades do not have required strength, therefore it is important to develop light-weight construction allowing to increase rotational speed of fan rotor. The calculations of strength of blades with various honeycomb structure are carried out with finite-element method at software. Dependences of stress and strain distributions on rotational speed of the rotor. Development of core rod of working wheel blade of axis flow fan of VOD series in form of honeycomb structure from aluminum alloy AK7 allows to increase rotational speed of the fan in 1.8 times. Consequently, it allows to increase productivity of the fan in the same times.
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