Winding a Long Coil with a Pre-Programmed Turns Density Variation
1975
Abstract : A conventional cable manufacturer's concentric taping machine has been modified to wind a long solenoidal winding with a smooth pre-programmed turns density variation. An interpolating function generator with many adjustable set points is used to define the function of coil length that the turns density is to follow. A machine having this capability is needed to provide a towed ELF loop antenna with the smoothly tapered sensitivity variation it requires to discriminate against vibration noise.
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