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With my old VariEze (not a training aircraft; in the same power class as the Cessna 152 but lighter and with much higher wing loading) I had a cruise propeller and a climb propeller that I could exchange on the ground with about 30 mins of work. I measured ground roll at max gross weight and calm wind to be around 1500' with the cruise prop and 1100' with ...


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I interpreted the values as follows: The angle of attack at which the specified propeller airfoil generates zero lift The change in lift coefficient per change in $\alpha$ in radians The same as 2, except that it is this value around the stall angle (it is mostly a safety factor for numerical calculations I think, small but non-zero) Maximum $C_l$, which is ...


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