Figure 5-10. Distribution System Weight Estimate (15 GW Input Power) For purposes of the present parametric study, a multiplying factor of two was assumed for resistance of the conductor at operating temperatures. Thus to maintain the design values of voltage drop requires doubling both the area of the conductors and the weight of the conductors from that given in Figure 5-10. 5.4 MAGNETIC INTERACTION The direct current distribution of the transmitting antenna produces magnetic dipoles, which will react with the Earth’s magnetic field and produce rotational torques. The power flow paths used in the array must be such as to minimize this torque. Figures 5-11 and 5-12 indicate the basic torque relations for the cases of lateral power flow and radial power flow. Providing reasonable symmetry is maintained in all quadrants of the circular array, both of these distribution patterns exhibit a natural cancelling effect, and the net torque will be near zero.
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