Recognizing an approaching stall is part of pilot training as during landing approach the aircraft is flown close to the stalling speed for the configuration the pilot has set. During training the pilot is trained to handle and act immediately upon a stall of the aircraft.
Several devices have been developed by aerodynamicists to aid the flight crew in assisting this flight condition.
Stall exercises during flight training are fun to do when performed under controlled conditions and with a competent flight instructor. As a stall can happen at any airspeed, devices have been constructed to help detect these and give the pilot advance warning.
Excerpt from the document:
"Aerodynamic wing stall accidents have been a concern since the canard was removed around 1910. Approximately 40 percent of General Aviation fatal accidents are due to loss of control with the majority of those being from stalls. One element of stall awareness training that's not often taught is the stall warning details of sensors used to detect an aerodynamic wing stall and then how those sensors are used in a system."
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