| 摘要 |
PURPOSE: A variable wing structure for a windmill and method for mounting a propeller using the same are provided to increase the energy production at the same wind velocity condition and reduce the manufacture cost. CONSTITUTION: In manufacturing variable wings(A), a contact wing(2) is engaged with a plurality of hinges(3) to vary the outside of a wing for a propeller. Elastic stems(5,5') or springs are installed between the hinges(3). In manufacturing airfoils for the propeller, 2-airfoils, 3-airfoils, 4-airfoils, and 5-airfoils are manufactured with the variable wings to be a propeller contact rotating mechanism. Thus, the transformed energy production is increased at the same wind velocity condition. |
