February 2016 Issue

Forward Center of Gravity

Figures 1 and 2 depict the same airplane with a forward center of gravity and one in which the CG is further aft, closer to the center of lift. The CG acts on the airplane via the red arrow while lift—shown here opposing CG, actually works at a right angle to the relative wind. In both instances, some tail down force must be generated, as represented by the green arrow at each tail. That tail…

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