ORIGINAL: David Bathe
ORIGINAL: rcpattern
Anhedral stabs give the same effect as a lower stab on the fuse.
Arch
That is my take on them, exactly the same way that adding dihedral has the effect of raising the wing.. and vise-verse.
Could be wrong but it's always been my quick fix. A lot simpler than re positioning the wing or stab.
This shark fin and T-Can thing really is something though... specially for a monoplane.
Expect to see derivatives on full sized aerobats in the comming years.
Here's a sketch of a design concept done at least 8 years ago intending to use counter rotating props.... that wasn't available.
Shark fins/T-Cans top and bottom. Smaller wings etc.
Not so much a plane... more a machine designed to carve lines.
I think that adding dihedral has some added effects other than just that of equalling raising the wing.
If you yaw a plane with no dihedral, there will be no or little rolling effect.
If you yaw a plane with a lot of dihedral, the "forward" wing (right hand side wing in a left yaw) will hit the oncoming air with a much larger angle of attack then the other wing, causing a roll.
I would expect that there are similar effects on a tailplane with anhedral. Yaw the plane left and the plane should pitch up. The two sides will not cancel each other out, because one side is facing the sideways wind and is more effective, while the other side is blanketed behind the fin/rudder. I therefore think that tailplane anhedral should reduce pitching to the belly in knife edge. I could also be totally wrong.
Magne