Hover Charts

The hover charts starting on page 81 were prepared using the combined momentum and blade element method just described. The charts are based on the following assumptions: [2]

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FIGURE 1.44 Calculated Performance of Isolated Main and Tail Rotors of Example Helicopter

• NACA 0012 airfoil characteristics based on the whirl tower tests of reference 1.1. Thus the Reynolds number characteristics correspond to a 16-inch chord.

• Blade cutout = 0.15 R