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freebeard · 04-29-2015, 07:03 PM

No, scratch the whole thing. You've found the maximum rate of change of Cd, a second order thing. Minimum drag, Cd, is the floor of the curve out to the right where l is overunity to d.

04-29-2015, 07:03 PM	#7 (permalink)
freebeard Master EcoModder Join Date: Aug 2012 Location: northwest of normal Posts: 27,747 Thanks: 7,791 Thanked 8,596 Times in 7,079 Posts	No, scratch the whole thing. You've found the maximum rate of change of Cd, a second order thing. Minimum drag, Cd, is the floor of the curve out to the right where l is overunity to d.