Kwijibo wrote:
raptor22 wrote:
*ahem*. We are hoping to get the prototype up in the air in a few weeks.
Flying wings are awesome.
One possible problem we may run into if we do a flying wing design, is that I
hear flying wings are only stable at higher speeds. Anyone else know much about flying wings? Either way, I agree....awesome
I've been designing, building and flying r/c flying wings for about 8 years now. If done properly, a flying wing is perfectly stable at all speeds.
That myth stems largely from the fact that flying wings naturally have a little less spiral stability than conventional airplanes, because the vertical surfaces (if used) aren't as far from the CG. Thus, if thrown into a spin they don't recover from it quite so easily. Add to that the fact that your typical flying wing uses sweep, and washout to make it pitch stable....and if you pick just the wrong combination it will tend to stall at the tips first.
The result is that if you don't do things right, and stall the plane in the turn, it will want to roll over into a "spiral of death."
The easy solution is to use more washout than you think you need, but that costs a bit in performance.
--Alex
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