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Climb testing today. Determined Vx at 55 mph, Vy at 65 mph.
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Comment by Daniel Niendorff on September 14, 2017 at 7:37am
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Its actually easier than one would think. You perform series of full power climbs at different speeds and plot the altitude gained vs airspeed. The plot will be parabolic, with the peak at Vy. A line from the zero axis that is tangent to the parabolic curve intersects the curve at Vx. The FAA advisory circular on experimental testing goes into a little more detail.
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Comment by Paul Sanders on September 13, 2017 at 9:55pm
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I'd love to know how you go about determining that
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