hyökäyskulma
Hyökäyskulma, also known as angle of attack, is a fundamental concept in aerodynamics. It refers to the angle between the chord line of an airfoil and the direction of the oncoming relative wind. The chord line is an imaginary straight line connecting the leading edge and the trailing edge of the airfoil. The relative wind is the direction of the airflow as experienced by the airfoil.
The hyökäyskulma is a critical factor in determining the lift and drag forces generated by an airfoil.
For most airfoils, a small positive hyökäyskulma is necessary to generate lift. Even airfoils designed to produce