Quote:
Originally Posted by Crumpp
Right, they don't fly to the moon either despite being an anti-spin device.
What that has to do with anything, I don't know. Maybe it is significant in your mind?
What they do is energize the boundary layer by increasing the high energy turbulent portion so that stall is delayed significantly compared to plain airfoil.
Twisting on the otherhand, simply moves the angle of incidence a few degrees.
Go back a few pages and look over the definition of "spin resistant airplane".
Maybe the light bulb will come on for you and maybe not?
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when it comes to defining resistant I think you provide the perfect example.
Heres a really nice and simple way to illustrate this for you...you have pitched up in your 109....inboard section of the wing begins to stall and the lovely slats have deployed keeping you nice and safe....you keep pulling and your angle of attack is still increasing (even for the magic outboard section of the wing).....now you have pitched so much that you have stalled the outboard section of the wing because you have gone beyond the maximum angle of attack the slats allow.......please explain from this point what magic force is in place to prevent a spin.
Now if you are sticking with the 109 elevator being unable to provide enough force to pitch beyond that point then you have:
1. eliminated the slats from actually being the main protection.
2. just highlighted exactly why the 109 was inferior in turn performance.
I see that not even NACA managed to educate you on the real mechanics behind boundary layers.....go back a few pages and you will see how they completely contradict your theories.
now what washout does is because of the physical twist in the wing putting the tips at lower incidence, the outboard sections of the wing remain unstalled when the inboards are stalled because the outboard sections are at a lower angle of attack.....which means the boundary layer is still adhereing to outboard section ofthe wing (because they are NOT stalled), airflow is still flowing over the ailerons making them effective...pretty much all the same conditions that are applying to the 109.....now if only there was some way of preventing pitching beyond critical angle of attack my Spit would be unspinnable.......no stall = no spin remember.
Trust me...my lightbulb is on AND I'm home too.