F4D Skyray eleven reflex?
08-17-2014, 01:18 PM
#3
I don't know what particular model you are referring to but my scratch built 36" span F4D has none at all. It seems the natural stability of its 'ogee' delta is quite adequate.
08-26-2014, 06:18 AM
#6
The amount of "reflex" needed for models is usually just a slight amount of UP trim once you are airborne, if any.
If the CG is within limits of where it has the best dead stick glide and if the wing loading is relatively low, the less your need for UP trim.
When I first got into this hobby, I read articles written by those who claimed that model flying wings and deltas needed special airfoils, but that has been mostly debunked as voodoo witchcraft by now.
If the CG is within limits of where it has the best dead stick glide and if the wing loading is relatively low, the less your need for UP trim.
When I first got into this hobby, I read articles written by those who claimed that model flying wings and deltas needed special airfoils, but that has been mostly debunked as voodoo witchcraft by now.
