 |
| |||
fan tail device (A historic mechanical device for yaw control of a wind rotor, e.g. in historic wind mills and in some early (to about 1980) electricity generating wind turbines.  mragheb.com agrabo) | |||
|
| |||
| fan tail device (A historic mechanical device for yaw control of a wind rotor, e.g. in historic wind mills and in some early (to about 1980) electricity generating wind turbines. mragheb.com agrabo) | |||