While not wanting to upset, or denigrate any one or thing, one must be quite careful when reading these threads. For example, the 'downwash' illustration above, showing a nozzle squirting a fluid over the tilted wing sections. Not quite what happens in the real world, where all the air, above, below and all around, is moving. The wing AOA too, is above that achievable by our model sections. If a similar illustration could be done, with wing angles that modellers can use, say a nice semi-symmetric (cambered) section between 0 and 6 deg AOA, with the flow all round, and well above and below, perhaps then the result would be more convincing. As it is it is it is an interesting picture of a very artificial situation. Similarly, the Fokker picture with the nice coloured lines is also pretty misleading. Perhaps a proper side view with the wing chord line drawn, and not the fuselage datum, would then illustrate that the airplane is rigged no differently than any other, and certainly no proof that Anthony knew about the 'downwash'. As those knowledgeable of the real one will know, it needs a hefty forward push at cruising speed to prevent climbing, and was often flown with a bungee attached to the stick to prevent the pilot getting too tired on long flights. Strange then, that Mr. Fokker, knowing about 'downwash', didn't take its effects into account during the design process, or add a trim tab to assist the pilot...
I will say no more.
Evan, WB #12.