Thread: Discussion Smart Dart XS
View Single Post
Old May 12, 2008, 11:07 AM
jjjlaudenslager is offline
Find More Posts by jjjlaudenslager
United States, CO, Caņon City
Joined Oct 2005
63 Posts
test: put rudder under

To answer the question I posted in #3576, I cut the vert stab/rudder off the top of this Dartish Nutball and glued it underneath. Kept all rates the same. It was much more responsive to rudder input but otherwise flew the same or nearly so. I cut back the rudder rate by 20% to bring its response rate to what it had been. Very nice in roll and turn. In harrier/hover it seemed a little less controllable; as if there was too much tendency to roll rather than yaw when yaw was what I wanted. I then cut 3/4" off the rudder to give a shorter but relatively longer rudder, and returned the rudder rate back up 20%. The harrier/hover smoothed out and maybe left roll as good as before.

Conclustion: at least with a rudder that's big in relation to the vert stab, an under rudder works good, maybe best. That's not to say I'll ever put it on another roll-on-ground airplane. I probably will on a VTOL Albatross.

jjjlaudenslager is offline Find More Posts by jjjlaudenslager
Last edited by jjjlaudenslager; Jun 01, 2008 at 08:59 PM.
Reply With Quote