| 摘要 |
Rotors which were built on ships in order instead of sails to utilise the wind have become known under the name of Flettner rotors. The advantage of these is their slight extent in comparison with a tackle which produces the same amount of energy. Furthermore, there is no need for difficult, manual operation, and both the direction of rotation and the direction of rotation of the rotors can be controlled by motors. A further advantage resides not only in the utilisation of winds which do not blow on at the optimum angle, but also in that the rotors are not endangered by storms. These advantages permit energy to be drawn from the wind by means of a long and stationary track installation on which the rotors circulate as in the case of a cable car. The track installation is set up transverse to the strongest and most frequent winds. It is also possible to use the head (contrary) wind by reversing the direction of rotation. The rotors can be driven by motors which circulate together with them on a carriage, or by friction wheels which roll on the track installation. The present additional application provides for carriages which are not moved on wheels but are raised by magnets.
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