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Jet Stability and Turning

Featured Replies

Hello, I just noticed something the other day watching the ailerons on a real 767 move. In PIC after you bank the aircraft you have to hold the ailerons a little bit into the turn to hold your bank angle. On the real aircraft I notice they went to neutral after the plane reached its bank angle. Correct me if I am wrong but on GA aircraft you have to hold the aileron into the turn for shallow bank angles, for 25 degree banks you can fly with the aileron neutral, and for steep banks you have to apply aileron opposite your turn because of over banking tendencies. Is this the way a real jet behaves? Did I miss something here I thought this was simulated correctly. :-wave Thank you

  • Commercial Member

You have to continously add a little bit of aileron towards the turn otherwise your bank angle will reduce.Take a look at the wings of (most) modern aircraft. You'll notice a "V" shape. (basically the tip is higher than the root of the wing).As the lift vector is perpendicular to the surface, the two lift vectors of the wings will meet somewhere above the aircraft. In a turn, you are just making the lift vector of one wing grwater than the other, but they are still pointing somewhat towards each other. The result is that over time the aircraft will stabilize and return to a level condition. Note, the pressure you have to add to continue a turn is much lower than what it takes to start a turn. Maybe you just couldn't see this small movement?Regards,Mark

Mark Foti

Author of aviaworx - https://www.aviaworx.com

logo_avsim.png

Thanks for the reply, Yes I probably did not notice the small movement since the flaps were out. Thank you

Hi,PIC1 isn't as well modelled in this regard as LDS767 is. In the real jet little aileron is required to maintain the bank, and that's the way LDS is modelled at the moment :).Tero

PPL(A)

looks as if someone ate their wheaties and paid attention to their aerodynamics class. nince explination mark

Is this true for all bank angles? Thank you for your replies :)

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