Step 1: Making of the Wings.
Plywood (water repellent) 4mm. in thickness. 30 x 120 cm. put 6 of them in the water for one night.
Step 2: Molding
Tie the wet plywoods properly on a tree for at least one day. Draw the corner triangles with the ruler and cut them properly.
Step 3: Assembling
Cut the 6 mm. in diameters flexible pipes for at least 1 m. long. Screw them and glue them to the plywoods. Cut the ends properly, close the ends living small holes. Fill them with foam. Next day, take the screws back and clean them with fine sandpaper. Close the ends with plywood. Use still putty to get better surfaces. Clean them with fine sandpaper and paint them.
Step 4: The Structure.
Use pipes and pipe couplings to build the structure. Her I used old washing machine parts as chassis with double bearing.
Step 5: Assembling 2
Put the structure on the vertical with the help of a ruler. Get the right positioning (horizontal) of the wings again with the help of a ruler. Tie them properly and cover the washer and acme screws (steel) with silicon to protect them against rain and moisture.
Step 6: Dynamo
Take off the cover of an old jet water pump. Place magnets on its rotor. You can use any rotor kind of metal pipe with two bearings at it ends to rotate the magnets with the help of the propeller.
Fill the used (or new) washing machine coils with iron or stud. Place the coils around the rotor ( as much as you can unless the irons will face the turning magnets.The voltage increase as the coils are closer to the rotating magnets.
Connect the coils with used (or new) diode gates to increase the efficiency. Because every time a magnet get closer to a coil creates a voltage difference between its ends. But the polarity changes when the position of the magnet is right behind it and goes far leaving the coil away from its magnetic space. The diode gates always correct the voltage polarity and increase the efficiency. You can add LEDs for each coil to check if they work properly. Good luck !