Quote:
Originally Posted by Machinbird
Last thing you need close to the ground is a big nose down input. It would be better to stall and settle in.
Originally Posted by Mad (Flt) Scientist
That statement is making a BIG assumption about the stall that you'd experience if there were no stick pusher. If all you did was "settle in" then you'd have "certifiable natural stall characteristics" and, er, likely not have a stick pusher anyway.
We are almost in agreement. Look at the assumptions I used and see if they are reasonable.
Assumption 1. The stick pusher is there to avoid a locked in stall condition.
Assumption 2. In a locked in stall, the aircraft would stay pitched up or even pitch up somewhat further relative to its flight path.
Assumption 3. Drag would rise, lift would decrease, and the aircraft would settle.
Assumption 4. Ground contact would stop the downward acceleration at a much lower velocity than would a lawn dart type earth entry thus increasing survivability. For this to be true, the stick pusher inhibition altitude would probably have to be on the order of 200 feet agl. It is still possible that a roll off could occur if controls are mishandled.
Do we really need the full 75 lbs of nose down force on the yoke in all flight conditions? Do we need a warning that the stick pusher is about to activate?
