Experimental Study on Dynamic Aerodynamic Characteristics of Different Antenna Aspect Ratios with Reduced Frequency

Table 2

Mean, maximum, and root mean square values of aerodynamic coefficients with respect to the aspect ratio during a single rotation period. AR, aspect ratio. (Values represent magnitude only, not direction).

Flat plate antenna		Reduced frequency, K = 0.12			Reduced frequency, K = 0.2
		Mean	Maximum	Root mean square	Mean	Maximum	Root mean square
AR 0.5	Cx	0.90	1.77	1.07	1.28	2.51	1.54
	Cz	0.29	1.18	0.68	0.09	1.25	0.72
	Cmx	0.30	1.89	1.04	0.58	2.96	1.66
	Cmy	0.02	0.22	0.11	0.09	0.43	0.22
	Cmz	1.56	2.89	1.77	1.88	3.52	2.12
AR 1.5	Cx	1.11	2.14	1.32	1.12	2.37	1.38
	Cz	0.11	0.57	0.33	0.01	1.69	0.86
	Cmx	0.27	1.32	0.79	0.29	1.73	0.94
	Cmy	0.00	0.15	0.08	0.02	0.26	0.17
	Cmz	1.05	2.20	1.24	1.33	2.48	1.55
AR 2.0	Cx	1.08	1.99	1.23	1.15	2.25	1.34
	Cz	0.16	0.96	0.61	0.15	0.96	0.61
	Cmx	0.19	1.03	0.57	0.19	0.90	0.54
	Cmy	0.04	0.19	0.11	0.01	0.14	0.08
	Cmz	0.82	1.74	0.99	0.86	1.81	1.04
AR 2.5	Cx	1.02	2.23	1.21	1.15	2.25	1.34
	Cz	0.10	1.04	0.57	0.10	1.04	0.57
	Cmx	0.13	0.91	0.50	0.16	0.90	0.51
	Cmy	0.04	0.20	0.12	0.03	0.16	0.09
	Cmz	0.69	1.42	0.82	0.74	1.60	0.90