Well the ribs are there to create the wing profile and prevent twisting. It's the fore and aft tubes that carry the load to the fuselage.Leaving a gap in the truss (by making two ribs parallel) would become a weak spot IMHO. In the worst possible place.
We have real live engineers growing on trees here... one of them can easily verify, de-bunk, and/or quantify the uneducated opinion above.
IMHO this wing type should be good for the Piojo or anything else as well.Still a fan of the parasol and Piojo...
...but for as the talk turns to midwing, I think swept forward Cygnet style could be made to work.
In my version, the leading edge D-tube is the forward spar. That's why I used it instead of a standard structure.One point...if looking to maximize strength to weight ratio, then I don't think you need the D-cell leading edge. As I understand it, the whole point of the Ercoupe-style wing is that the forward and rear spar and and diagonal ribs form a triangular truss in all directions to carry the drag/antidrag and torsion loads. Your sketch looks like aluminum so simple sheet nose ribs and a narrow leading edge, or maybe strips of aluminum over foam ribs, would be lighter and do the aerodynamic job.
I believe I have a set I can e-mail you, let me look and see.I'm hoping VB's aluminum Pelican idea get's tossed around a little more. If it was big enough for real people that'd be a pretty cool airplane. Sadly I lost my Pelican plans in a computer crash last fall
And you have just inspired a new thread:I'm hoping VB's aluminum Pelican idea get's tossed around a little more. If it was big enough for real people that'd be a pretty cool airplane. :