The second chart isn't showing speeds anywhere near Vx, and yet still shows power levels as low as 40 hp, and at 82 knots!
I said the minimum power requirement to hold at altitude at best speed (Vx) in a typical small airplane (C150 in this case) is 25 hp.
And the first chart isn't even from...
I am a PP and engineer. The Cessna was just given as an example of how surprisingly little HP might be required just to barely maintain altitude at that scale and drag . (I said 25 HP but it may actually be as low as 17 HP when I researched it back when) I never mentioned such a system could...
No one is really taking this seriously.
A Cessna 150 at the optimum speed can maintain altitude on 25 hp.
Now imagine a high strung two stroke 'power pod' than swings up from the empennage, like one of those power modules on a sailplane, with a 2 ft dia. prop.
I imagine the whole system could...
So the Sonex then has the same airfoil as the original (unmodified) Yankee airfoil, which is known for its bad stall (which is entirely a function of the airfoil) Should I assume the Sonex stalls the same then?