Development of Full-Scale Ultrathin Shell Reflector

Table 3

Comparison of different designs of reflective surface with skirt.

Design no.
	Skirt with plies 0𝑛, 𝑤=150 mm
	𝑛	𝑡2 (mm)	mass (kg)	Freq. (Hz)
1	2	0.22	10.600	0.768
2	3	0.33	11.085	0.850
3	4	0.44	11.550	0.912
4	5	0.55	12.020	0.954
5	6	0.66	12.500	0.988
	Skirt with plies 0𝑛, 𝑤=200 mm
	𝑛	𝑡2 (mm)	mass (kg)	Freq. (Hz)
6	2	0.22	10.930	1.025
7	3	0.33	11.560	1.127
8	4	0.44	12.200	1.199
9	5	0.55	12.840	1.245
10	6	0.66	13.475	1.278
	Skirt with plies 0𝑛, 𝑤=250 mm
	𝑛	𝑡2 (mm)	mass (kg)	Freq. (Hz)
11	2	0.22	11.260	1.330
12	3	0.33	12.060	1.469
13	4	0.44	12.860	1.533
14	5	0.55	13.660	1.569
15	6	0.66	14.460	1.585
	Skirt with plies 0/45𝑛/0, 𝑤=150 mm
	𝑛	𝑡2 (mm)	mass (kg)	Freq. (Hz)
16	0	0.22	10.600	1.070
17	1	0.33	11.085	1.195
18	2	0.44	11.550	1.350
19	3	0.55	12.020	1.388
20	4	0.66	12.500	1.399
	Skirt with plies 0/45𝑛/0, 𝑤=200 mm
	𝑛	𝑡2 (mm)	mass (kg)	Freq. (Hz)
21	0	0.22	10.930	1.470
22	1	0.33	11.560	1.620
23	2	0.44	12.200	1.829
24	3	0.55	12.840	1.851
25	4	0.66	13.475	1.852
	Skirt with plies 0/45𝑛/0, 𝑤=250 mm
	𝑛	𝑡2 (mm)	mass (kg)	Freq. (Hz)
26	0	0.22	11.260	1.702
27	1	0.33	12.060	1.990
28	2	0.44	12.860	2.145
29	3	0.55	13.660	2.135
30	4	0.66	14.460	2.105