15/02/23 10:59:32
@wind-energy @lecture
- An airfoil, any shape designed to produce max. lift. Lift to drag ratio.
- For a streamlined bdy flow is atached for the most part.
- Need to increase weight and stiffness of blades, to reduce lift, have more drag force (which is what we derive power from?).
- Airfoil produced with bio mimicking, looking at birds.
- Coefficients of lift and drag, are a function of airfoil/angle of attack.
- NACA classification is a way of classifying an airfoil, with certain dimensions that seem variable among airfoils.
- You can build up the shape of the airfoil from the NACA digits.
- For certain airfoils (cambered), there is lift even at zero angle of attack.