Diamond 20, T- Tail, fuel tanks on fuselage
I have flown a couple of hours of a DA20... And I am still figuring it out why does it have T-tail, and fuel tanks of fuselage instead of on the wings.
Wikipedia and folks from airliners.net are saying T-tail has advantages of:
1."T-tail will give you better rudder authority at very high AOA and stalls so as to prevent a spin."
Why?
2."A longer tail arm to reduce trim drag"
How?
3. "Lets the airplane have better longitudinal pitch characteristics in high speed flight as the tail is above the wing wake. "
How and Why?
There were no further explanations at all after just these single sentences....
Also, is it both airliners and light aircraft with T-tail can suffer from deep stall?
Why don't the Austrian put the fuel tanks on the wings? Now put it on the fuselage instead?
Thank you very much!