Aerowerx
Well-Known Member
I was trying to model a split V tail.
First, I tried defining a double fin with dihedral (no elevator). I was unable to get a zero pitching moment without being horribly unstable.
Then I tried no fin, but an elevator with dihedral. Works fine.
Even though both should be the same functionally, evidently XFLR5 needs an elevator in order to calculate the pitching moment correctly!:ermm:
First, I tried defining a double fin with dihedral (no elevator). I was unable to get a zero pitching moment without being horribly unstable.
Then I tried no fin, but an elevator with dihedral. Works fine.
Even though both should be the same functionally, evidently XFLR5 needs an elevator in order to calculate the pitching moment correctly!:ermm: