VII. The Tower

The family of the AV 928, 929 and 1010 presently consider the use of conventional, three- or four section steel towers with heights from 90m to 99m. However, the use of concrete tower bases covering one half to two thirds of the lower sections of the tower is under investigation.
All towers are optimized for the family of turbines. Their natural frequencies are adjusted to the frequencies coming from the rotating blades, so that no damages can occur to the tower.
The tower internals are designed for the use of lifts inside of the tower, which come as a standard, if not otherwise ordered. This ensures that the maintenance personnel is really going up into the nacelles for their work, and that they are fresh and concentrated during their visits up there.