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A radically new, ultra-high-speed method for the installation of cables in ducts

A radically new, ultra-high-speed method for the installation of cables in ducts is described. A high-speed moving cable will slide on it’s own, equally distributed, inertia without suffering exponential force build-up in curves, Centrifugal forces are compensated for any curvature of the duct by a proper cable tension. Some ways to supply this tension and to accelerate the cable before installation are described. Theory says that 10 km of fibre-optic or other cable can be installed in one shot 0f 2 minutes. This theory is checked by scale-model straight- and looped-trajectory field trials. Here 1536 m of cable is installed in 2 minutes and 5 right-angled curves and 6 loops are passed in 7 seconds respectively. For understanding, friction coefficients between cable and duct are measured at high speeds.

Proc. 40th IWCS (1991) 758
W. Griffioen, G.J. Prins

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