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Wind tunnel experiment
1. The higher the wind speed, the stronger the lifting forces. And the lift grows exponential to the speed of wind.
2. The higher the Angle of Attack(AoA), the higher the lift. However, there’s a maximum of AoA at which the lift peaks. Hence, higher AoA would result in a reduced lift.
3. In wind tunnel experiments, the air velocity on top of the airfoil(low pressure) is faster than the bottom(high pressure).
4. Lifting force is caused by differential pressure because of speed difference between the airflow above and below the airfoil.
The formula below are the contributions of producing more/less lift.
L = r/2 * v2 * CL * S
L- Lift
r- Dynamic pressure
v- Velocity of the airflow
CL- Wing design and angle of attack
S- Wing surface area