RJW
Well-Known Member
Since topspeed100 introduced me to the RF4D I can’t stop sort of seriously considering drawing up a metal version. The design has kind of gotten under my skin a little bit. But there is a problem (for me anyway). The plane uses the 230XX airfoil with 3.5 degrees of washout.
For all you airfoil gurus and glider guys, is there a modern, laminar airfoil that could be substituted? I would like to adhere as much as possible to the mission and performance characteristics of the original wooden airplane. Characteristics and performance are attached. I would like to maintain the original planform as well.
And (not to ask too much!) I also want a wing that is reasonably easy to build in metal. This usually means no huge cusps and a shape that can be flat wrapped without hacking up the skins into too many pieces. Also preferred are a constant percent thickness and little or no washout.
So is there such a beast? What do similar modern gliders and motor gliders use?
Thanks,
Rob
For all you airfoil gurus and glider guys, is there a modern, laminar airfoil that could be substituted? I would like to adhere as much as possible to the mission and performance characteristics of the original wooden airplane. Characteristics and performance are attached. I would like to maintain the original planform as well.
And (not to ask too much!) I also want a wing that is reasonably easy to build in metal. This usually means no huge cusps and a shape that can be flat wrapped without hacking up the skins into too many pieces. Also preferred are a constant percent thickness and little or no washout.
So is there such a beast? What do similar modern gliders and motor gliders use?
Thanks,
Rob