In theory if the airspeed of an airplane is doubled while in level flight parasite drag will become. CL Coefficient of Lift and for our example equals is proportional to the Angle of Attack. Why Does Stall Speed Increase With Bank Angle Aviation Aviation Training Pilot Training As long as you understand and have a. . 8 Effect High Lift Devices. The stalling speed of an airplane is most affected by variations in airplane loading. Turbulence which causes a decrease in the stall speed. Some of the most common signs of a stall include the following. An airplane gaining altitude at a high pitch may stall at a lower airspeed than an airplane flying horizontally at a flat pitch. Load factor angle of attack and power. 23 Stall speed is affected by Weight load factor and power. B center of gravity moves forward. Icing or damage to the wing increases the stalling speed. And your stall speed increase...