Aerofoil : In American English its airfoil and in British English aerofoil . It is a shape of wing , blade ( of propeller , rotor or turbine ) . There are so many designs of aerofoil . The parts of aerfoil are as follows :
- Chord line : It is imaginary straight line which connecting the leading edge and trailing edge .
- Camber line : It is curved line which divide upper camber and lower camber equally .
- Leading edge : It is point at the front of the aerofoil having maximum thickness . Some of control surface are present here also .
- Trailing edge : It is point at rear portion of aerofoil . Many control surface are installed in trailing edge of the wing .
- Maximum thickness : It is maximum distance between the upper surface and lower surface of aerofoil .
- Maximum camber : It is maximum distance between the chord line and the camber line .
- Upper surface : It is upper curvature from the camber line of aerofoil .
- Lower surface : It is lower curvature of aerofoil .
- Angle of attack : It is angle between the chord line of aerofoil to the relative air flow .
