Unsteady Aerodynamic Characteristics of Antenna Rotating in Different Elevation Angles

Figure 6

In one rotation period, mean, maximum, and root mean square values of the aerodynamic coefficients with respect to elevation angle and reduced frequency: α = 0–30°, K = 0.2, 0.24, and 0.4. (a–d) Mean value; (e–h) maximum value; (i–l) root mean square value.

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(b)

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(k)

(l)