Foam Addict
Squirrel member
I have developed a nasty habit recently of going outside with a flyingwing, and returning with two not flying wings.
Aircraft multiplication.
- Thread starter Foam Addict
- Start date
Oops. I've done that with my rtf a couple times
Foam Addict
Squirrel member
FTW?
I'm no hipster!
No, two 1/4" pine square dowels.
I lost a fin, and flew into a thin wire fence at full speed!:black_eyed:
I'm no hipster!
No, two 1/4" pine square dowels.
I lost a fin, and flew into a thin wire fence at full speed!:black_eyed:
The important question is, was this in combat or "other."
Foam Addict
Squirrel member
This is a combat wing.
It died in mortal single combat.
AKA test flight!
I reduced the size of the elevons, changing them to be rectangular, and some how destabilized the wing in doing so.
Any Ideas teach?
It died in mortal single combat.
AKA test flight!
I reduced the size of the elevons, changing them to be rectangular, and some how destabilized the wing in doing so.
Any Ideas teach?
Describe the action of its demise...
Foam Addict
Squirrel member
I launched it, and it flew normally, for a second then started to torque roll a little. When I compensated, It rolled sluggishly until it rolled over level.
Then it violently snapped over, and began acting stalled and tail heavy.
I duplicated this twice, then it went into the fence.
I can add more details if you need.
Then it violently snapped over, and began acting stalled and tail heavy.
I duplicated this twice, then it went into the fence.
I can add more details if you need.
When you say you reduced the size of the elevons, do you mean the width? If so, the first thing I think of is that the reflex was reduced. Flying wings need reflex for pitch stability. But, you seem to be describing a roll issue. Maybe the prop torque overcame the roll authority of the elevons?
Foam Addict
Squirrel member
Yes I do mean the width, but It wasn't the prop. On Tuesday it flew great, but I had to bring everything down to 50% high rates with 40% expo to tame it down, and even then the roll rate was scary fast.
I was flying it on 100% rates for this flight.
It also behaved like this if I moved the controls too violently at low speeds before trimming, but it was controllable at least.
I was flying it on 100% rates for this flight.
It also behaved like this if I moved the controls too violently at low speeds before trimming, but it was controllable at least.
Where is your cg on this wing?
Foam Addict
Squirrel member
At 6" back from the nose.
As this is a 3/4 scale copy of the Zagi, I simply scaled it. The Zagi's CG is 8" back from the nose.
EDIT!!!! AIEEE! I just found the flying wing CG Calculator on RC groups. I am flying at the 30% Chord!
I will move it forward and try again.
Thanks for the help Teach, Much appreciated.
As this is a 3/4 scale copy of the Zagi, I simply scaled it. The Zagi's CG is 8" back from the nose.
EDIT!!!! AIEEE! I just found the flying wing CG Calculator on RC groups. I am flying at the 30% Chord!
I will move it forward and try again.
Thanks for the help Teach, Much appreciated.
Last edited:
What is that in terms of percentage of root chord?
Foam Addict
Squirrel member
See above!
Ooph! That'll put it in the dirt, for sure!
Similar threads
