Very similar to the V22 indeed, but with one prop and the engine will not rotate to dictate flight characteristics.

You're right. Actual trials do prove differently than the math concludes. With the array of props available, it is almost null and void to use the formulas for calculating thrust. The math does, however, give a general ball park figure.

I cannot get over how my airboat is so much faster with a 11x3 and 11x4 sized props; it came with an 11x8 - it was a real turd with that thing.