Reduced trim drag on a flying wing? - Page 3 - RC Groups
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Feb 17, 2013, 05:58 PM
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richard hanson's Avatar
-- unless there was thrust at some vector to stabilize it, the silly thing would simply tumble
SOMETHING must keep a non symmetrical foil from pitching .
No trim drag ?
On a more realistic note - i flew my new little VisionAire yesterday - it has 3 axis stabilization which is so well integrated that you don't even know it's there - the plane simply flies with no twitchiness and -once pointed or rolled to an attitude- remains there till you deliberately change it- uncanny!!
just like Uncle Sams multimillion dollar stuff.
The times -- they are a changing----
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Feb 17, 2013, 07:30 PM
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Last edited by b36roxs; Mar 12, 2016 at 05:20 AM.
Feb 18, 2013, 01:33 AM
B for Bruce
BMatthews's Avatar
Originally Posted by b36roxs
Okay thats true I was thinking that lift in front of the CG would give the pitch up that reflex provides.
If the CG is far enough back then yeah, that happens. But it's not a self stabilizing sort of thing because now the CG is behind the neutral point. You can see this for yourself if you try to "fly" a simple flat wing. It'll go into a rotating tumble because this arrangement with the balance point so far behind the 1/4 chord point isn't at all stable.

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