Your SN article is one of the best technical articles ever written about stunt and the only stunt article I remember reading that mentioned pitching moment due to pitch rate.
Why would one use a thin airfoil? Thicker would be lighter and have more Clmax.
Thanks, I mentioned it especially to show that we DID some reserch and analyses after first flight of Nobler :-))
And yet, I will mention another great analyze in SN article - about tails by David F. - there he wrote he had good results with thin tail. So that is why. However also thicker tail will not give much better numbers. Deflected elevator has simply more muscles on begin on corner.
Yes, I think that is a difficulty. You could make the tail bigger just for that acceleration, or you could use an antibalance tab as Tim suggests, but that might make other problems.
Right it will need larger tail area, but it will make even more mechanical problems with pivot.
I'm not sure of your point, but the nice thing about a stabilator is that you can rotate it as much as you need to rotate it relative to the airflow.
OK, so numbers:
Classic model like my Max has tail AoA angle in corner 16 deg and must make lift which can be reached at 6 deg AoA, that makes 22 degrees. We want make corner from straight flight by instant deflection of tail. So the tail is deflected to 22 deg from straight flight. But instead of making large lift, it is stalled and gives only 0.1 instead of necessary 0.5
If you compare to classic tail with stab and elevator, you can see that it has lot of lift close 0 AoA after instant deflection and aproximately that necessary 0.5 at 15 degrees.
The maximum of lift apears little later than 0 AoA, but we cannot do instant deflection anyway, so it is probably all the time without separation on low pressure side anyway.
Funny is moment polar, you can see that high moment is during entering radius, but when it already enters steady radius (means 15 deg AoA), moment goes down, it is clear proof of that buble on LE and thus also extra drag hich will make drag force in direction of air stream - means it will stop angular acceleration, so it makes imagination of very abrupt entry to the corner and prevents overstearing.
And yes, we are not in its linear segment, we are on opposite slope, but just that negative slope makes nice negative feedback, it is what we need for good controll of stunt model.
So maybe a longer tail would need to be bigger. Take that, "tail volume" people!
Or opposite - short tail (like mentioned combat) has much smaller AoA in turn, so those 22 degrees from my example will go down and it can work much better, even with micro tail volume :- ))
This whole is for larger analyze, because there looks to be some optimal tail length, but I think I also mentioned it in that article, I must find it somewhere and repost ... or write new if it is not clear there.