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<br /> <br />"GL"t & "GH" Grid Series Antennas <br />Approximate Wind Forces at 125 mph (200 kmh) <br /> <br />Top View <br /> <br />Grid Antenna without Ice <br /> <br />Antenna ~,":Wll'ld .. ..' <br />Olameter-HAngle '. <br />ft,'{m) ":d egree . <br /> <br />Axial <br />Force: . <br />F. . <br />lb. (N) <br /> <br />".,':' <br /> <br />3 ft. 0 180 (810) <br />(0.9) 70 52 (230) <br /> 115 -79 ( -350) <br /> 180 -200- (-890)* <br />4 ft. 0 310 (1360) <br />(1.2) 70 87 (390) <br /> 115 -133 (-590) <br /> 180 -330- (-1490)- <br />6 f1.(2) 0 710 (31 00) <br />(1.8) 70 200 (890) <br /> 115 -310 (-1360) <br /> 180 -770- (-3400)* <br /> <br />Fa <br /> <br />1-. <br /> <br />'X <br /> <br /> <br />... <br /> <br />F. <br /> <br />Positive Sign Convention for Windloads <br />t For "GL" Series values see below. <br /> <br /> Side ..Twl at! n 9 <br />Force Moment <br /> F. "M <br />Ib (N) flAb; (N-m) <br />0 (0) 0 (0) <br />93 (410) 59- (79)- <br />95- (420)- 57 (78) <br />0 (0) 0 (0) <br />0 (0) 0 (0) <br />155 (690) 127- (172)- <br />160- (710)* 124 (169) <br />0 (0) 0 (0) <br />0 (0) 0 (0) <br />360 (1600) 450- (610)- <br />370- (1640)- 440 (590) <br />0 (0) 0 (0) <br /> <br />Grid Antenna with 1/2 in. (25mm) radial ice.. <br /> <br /> <br />.:Slde'",;.: <br />Force;" <br />F ',','.' <br />IbiN) <br /> <br />;-i10:.%:;~~' ~t~~ ~ <br />.,.,..;:;,....M <br />.~. ,fl.-lb. (N-m) <br /> <br />0 750 (3300) 0 (0) 0 (0) <br />60 780- (3500)* 148 (660) -137 (-186) <br />125 -230 (-1020) 240- (1060)- 300- (400)- <br />180 -530 ( -2400) 0 (0) 0 (0) <br />0 1730 (7700) 0 (0) 0 (0) <br />60 1810- (8100)- 340 (1520) -480 (-650) <br />125 -530 (-2400) 550- (2600)- 1050- (1420)* <br />180 -1230 ( -5500) 0 (0) 0 (0) <br /> <br />Indicates maximum value. <br />For Grid Antennas with 1 inch (25 mm) of radial ice, use windload <br />values for solid parabolic antenna without radome. <br />t For 'GL" Series Grid Antennas. use 80% of F. and 90% of F. and M <br />values shown for the 'GH' Series. <br />Note 1 The above windloads are typical for most applications. For some <br />models, the loads may vary from this table. Contact your Gabriel <br />Sales Engineer for details. <br /> <br />P.O. Box 70, Scarborough, Maine 04070 U.S.A. <br />email: info@gabrielnet.com <br /> <br />Tel: 207-883-5161 <br /> <br />Fax: 207-883-4469 <br /> <br />web: http://www.gabrielnet.com <br /> <br /> <br />125 <br />