yes and no. TPG as a concept was Molts development. It was used in part of the Imp (two seater) but very minimally in the MIni-Imp (single seater) which is basically a stressed skin aluminimum sheet airframe.Anyone in AU's?
I don't think so. They are a rare build.
I think they used his own Taylor impregnated paper with resin instead of normal skins.
I always take a manufacturers figures with a large dose of good humoured salt but even with this level of scepticism, its a very handy performer - a two seater would be more practical.
As usual Nev - all true! BUT all aircraft are a compromise. Once you accept that, you work with what you have to the get the best result.I'd skip all that and try ducted fan direct on engine shaft. Such drive as is used there are common on helicopter tail rotors but all that has to be done right. The prop is running in "disturbed air" as well.. Engine in the centre (just behind) is a good idea. Keep the bulk of the mass in the middle. Less pitch inertia. Nev