Originally Posted by
Mad (Flt) Scientist
Most stall warning systems rely on direct or indirect sensing of angle of attack, not speed.
That is true.
Originally Posted by
Mad (Flt) Scientist
So they 'know' the weight of the aircraft because they are using AoA, and a heavier aircraft at the same speed will have a higher AoA.
So do you say that a lighter aircraft can't fly at the same AoA as the heavier one? The stall warner (the small flap at the leading adge) does not know how heavy the aircraft is, all its know is AoA hence a relative airflow. The warner doesn't care if you fly at 200kts or 20kts. If the AoA is to high the realtive airflow will push the warner's flap up which will close a switch that activates a buzzer or a warning light.