I really can't figure out what Stavetti's game is.
Me neither, but there is a wealth of different designs there....one can but hope one of them finally comes off. I believe they did actually produce something - there was an article some years ago about it in an Aviation rag - looking at their designs it was probably a proof-of-concept jobby.
Right back to the matter at hand...doesn't ring any bells so time to do some digging! Just trying to figure the layout...is it one engine driving 2 props?