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Old 12-22-2009 | 10:32 AM
  #8  
shdw
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Originally Posted by Cubdriver
The graveyard spiral is a classical "unstable system". The long answer to this topic is found in the study of aircraft stability, flight dynamics, handling qualities, and more generally system dynamics.
And this is why I didn't try to explain it. Such an aerodynamic nightmare.

I do have two little nit picks in there. One, it is assumed that the pilot is likely uncoordinated, in a slip. Directional stability is greater than lateral in most non delta winged aircraft. So I would add that into the mix as to what causes the increase in bank.


Two, you said, "So when you roll past a certain point the vertical component of lift goes to the horizontal."

I suspect this would be better represented with wording like, "with an increase in bank angle we decrease the vertical component and increase the horizontal component." I think that is what you were getting at there at least, right?


Otherwise, nice explanation. Also, you cheating punk! Using rudder to get some vertical lift you, what a pansy piloting technique, Vne limits are for sissies.
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