Wind Energy

4. the rod or shaft connected to the hub; it rotates the rotor.
5. An electronic instrument that can measure voltage, current and resistance
9. the area directly in line with the rotor. This is a dangerous area to stand in case a blade flies out while spinning.
11. the rotating section comprised of blades projecting from a hub.
12. “tear drop” shape cross-section used for wind turbine blades.
13. Central component connecting the blades to the driveshaft
15. a measure of the rate of flow of electrical charge

1. the electrical pressure or potential difference that drives the electric current. 1 volt = 1 amps x 1 ohm = 1 watts/ 1 amps
2. a force that resists the relative motion of two bodies in contract.
3. the conversion of energy from one for to another.
6. a force encountered by the blades that is perpendicular to the oncoming flow of air. Lift is a force working to speed up the rotation of the blades
7. The angle of the blades with respect to the plane of rotation.
8. the friction of the blades against air molecules as they rotate
10. a force times a distance that causes rotation.
14. the metric unit of power.
16. the rate at which energy changes form from one form to another, or the rate at which work is done.