Abstract
Modeling of phenomena and derivation of basic equations have been described about the installation of parachute attaching telecommunication cable in the conduit with bends using spiral airflow. It was clarified that in the bends relatively high friction force generated by contacting and/or attaching the cable to the conduit (pipe) wall in a limited distance yield to a jump in the tensile force exerting the cable. At the same time, the evaluation of the friction coefficient between the cable (and/or parachute) and the pipe wall was based upon the hypothesis that an efficient installation of the telecommunication cable using the spiral airflow owed to its reducing effect of the friction force. Through the analysis conducted, the availability of the numerical simulation was demonstrated.
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