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Old 07-12-2017, 03:27 AM   #1
Icaro_07
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Default Angle of attack and stick position

Does any one knows if for every trim setting a stick position corresponds to an specific AOA because if it's that way it stalls at different AOA
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Old 07-12-2017, 03:32 AM   #2
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Pre transonic Aircraft stall at pretty much a constant AOA as long as no lift devices deploy. Stall speed is a function of g load.

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Old 07-12-2017, 12:40 PM   #3
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So why keeping a stick position does the airplane starts to stall?
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Old 07-12-2017, 01:13 PM   #4
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In fluid dynamics, a stall is a reduction in the lift coefficient generated by a foil as angle of attack increases.This occurs when the critical angle of attack of the foil is exceeded. The critical angle of attack is typically about 15 degrees, but it may vary significantly depending on the fluid, foil, and Reynolds number.
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Old 07-12-2017, 01:27 PM   #5
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Sorry there are a few possibilities. Is the aircraft slowing down ? At the end of the day it comes down to AOA. Take a look at the guage in the Aircraft.

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Old 07-12-2017, 01:37 PM   #6
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Try yourself put the fw190 at certain stick position when you fell the buffet, then with ailerons put it nose down and the buffet will disappear but with nose up the buffet will appear again, it's like the f-15 flcs that you control g instead of AOA I don't know if I explain correclty
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Old 07-12-2017, 03:01 PM   #7
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Ok maybe this helps. The Aircraft is designed so when it stalls the Elevator will also stall. The elevator is producing a downward force in normal flight when it stalls the downward force is lost and the nose will drop unstalling the wing. If you leave the stick in a constant position the elevator and wing will unstall the nose will raise again and you will restart the cycle entering a stall again. No FCS just Aerodynamics.

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Old 07-12-2017, 03:26 PM   #8
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Yes agree totally with you, but the elevator can not stall if you hold a constant position = constant AOA, if the airplane slows down lift will reduce and will seek for balance and will drop the nose down but will not stall will not feel the buffet agree with that? Is just when you pull the elevator to the critical AOA is when the wing will stall regardless of your speed and altitude agree with me ?
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Old 07-12-2017, 03:45 PM   #9
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For a given stick position AoA alters with airspeed as does elevator effectiveness; you are assuming a very simplistic realtionship between the two when in fact the interaction is very complex.
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Old 07-12-2017, 08:47 PM   #10
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Do you know Whee i can get more info about this? And hay is more complex?
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