Bill,
I've done a poor job of communicating. We have set the trim and the model
will fly 2'08" in a 21 ft ceiling with a 9.5 in pitch. And we set the trim
at low power, just enough winds to cruise at shoulder height and we move the
ballast back until it just starts to stall, then move forward in small
increments until the stall disappears. However if we hit the ceiling in a
high power flight, the model doesn't recover. It is our own design so we are
without the luxury of a well thought out plan such as Little Square.
Cal Goddard,
Our wing incidence was set at 0° and stab incidence at -1°. We have reset
the wing incidence at 1.5° and the stab incidence at -2.5°, and will re-trim
the model tomorrow by moving the ballast. I was curious about your
statement, Is there a theory behind setting the wing incidence at 2° and the
stab at -1°? Also we had bent our prop hanger in a crash which induced
downthrust. The model flew ok afterwards, but we have removed the downthrust
for tomorrow's flying session. Again I am curious, what negative effects
does downthrust have? Your comments were timely.
Brant
Received on Thu Nov 16 2006 - 15:47:45 CET
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:44 CET