design questions
#1
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design questions
I am designing a Skyvan and I'm trying to make it as close to scale as I can. My question is should I use the real airfoil or should I use one that is more suited for RC?
I can't find what airfoil is used on the real plane.
Thanks in advance
Bill
I can't find what airfoil is used on the real plane.
Thanks in advance
Bill
#2
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You are always better off using an airfoil that has been proven successful for model airplane use than any of the full size airfoils. The two are unrelated. I have used the NACA 2415, 2417 and 2419 over the years for all of my models. Compufoil software is excellent for this. Dan.
#3
You are always better off using an airfoil that has been proven successful for model airplane use than any of the full size airfoils. The two are unrelated. I have used the NACA 2415, 2417 and 2419 over the years for all of my models. Compufoil software is excellent for this. Dan.
Mark
#4
It seems that the full size Skyvan uses NACA 63A414
http://m-selig.ae.illinois.edu/ads/aircraft.html
What size is the Skyvan model?
http://m-selig.ae.illinois.edu/ads/aircraft.html
What size is the Skyvan model?
Last edited by perttime; 01-27-2015 at 08:56 AM.
#7
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wildwillie,
A "D" tube refers to the end view of an airfoil where the leading edge is sheeted back to the top and bottom spar and there are shear webs between the spars. The outline looks like a stretched out capital letter "D". Pretty common design for models. You'll get the most strength out of a spar if it is at the thickest point of the airfoil.
Chuck
A "D" tube refers to the end view of an airfoil where the leading edge is sheeted back to the top and bottom spar and there are shear webs between the spars. The outline looks like a stretched out capital letter "D". Pretty common design for models. You'll get the most strength out of a spar if it is at the thickest point of the airfoil.
Chuck
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You'll find that at 55'ish watts per pound that the model will fly in a scale like manner. At 70 watts per lb it'll fly like a WWII fighter or hot modern private plane. More than 80 watts per lb and you're verging on jet fighter territory. At 100 watts per lb it will be very close to unlimited vertical climbing.
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Thanks for the guide lines for power, I guess I will just leave space on the firewalls for larger motors if needed. I do plan on using it for payload.
Bill
Bill