ORIGINAL: Montague
My eye says that the LE of the wingtip will be really far forward, but it's hard to tell from the picture.
What you want is also going to depend on the airfoil a little, and don't forget to adjust the aileron reflex during flight testing.
For a starting CG, I'd shoot for something close to 25-30% MAC, which you can easily calculate.
Is this your first SSC plane or just your first own-design? If it's your first SSC plane, get someone to throw it for you, and give it a good shove, and be prepared for the plane to possibly loop over or nose-dive, it doesn't take much of the elevator trim to be way out on a new design.
What's the wing area?
This is my first SSC plane. I built a gnat out of coroplast a month ago. It flew a half dozen times before I planted it. it was Very pitch sensitive.
Once in the air it was fun to fly.
I decided coroplast was not the way to go so this is my 1st attempt with cutting foam wings.
I'm trying to copy a SSC Battle Axe from pictures.
My wing is 9" root with 6" tip by 30" long.. NOT including the 1.5" alieron. I think wing area is around 450"
The fuse rails are 24" long with the OS .15 at one end and the tail feathers at the other end.
WHAT I DONT KNOW! is where to mount the wing saddle? 1/2" forward or backward will make a big difference? and I cant be that accurate from the pictures. THEN, WITH THE SADDLE IN POSTION, I can further adjust the CG with the battery position...
The CG calculators look good but will they work with this design?
Anybody out there got a battle axe?
Steve