Scientists measured acceleration and stress in different wind speeds in the tower. At an average speed of 4.3 m/s, the acceleration amplitude reached 0.07 m/s² and the base stresses – 1 MPa. In the wind of 14.8 m/s, these indicators rose to 0.89 m/s² and 4 MPa, respectively. The analysis showed its own fluctuations in the Hertz tower of 0.93 and revealed the most intense dynamic effects associated with the return of the blades.
The head of the field research, the leading engineer Ivan Rigel, the base temperature was measured, the seasonal dissolution of the soil was found to be 2.25 meters deep. The data obtained help to understand the dynamic behavior of windmills in permafrost for many years, to control mathematical models, and to create reliable structures for arctic conditions.
Source: Ferra
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