Accession Number:

ADA239874

Title:

At-Sea Hydrodynamic Evaluation of Bare Double-Armored Tow Cables

Descriptive Note:

Research and development rept.

Corporate Author:

DAVID TAYLOR RESEARCH CENTER BETHESDA MD

Report Date:

1991-07-01

Pagination or Media Count:

107.0

Abstract:

Two double-armored, bare cables were evaluated at-sea to determine the normal drag coefficient and normal loading function. A special device was attached at various positions along the cable to measure the in-plane cable inclination angles. This data collection method allowed a direct determination of the normal hydrodynamic loading using the differential equation that relates the inclination angle to the normal force. The resulting normal loading function differs from the classical sine squared functional relationship usually assumed for bare cables. A normal drag coefficient C sub tau of 1.70, independent of the Reynolds number, was determined for the two cables.

Subject Categories:

  • Electrical and Electronic Equipment
  • Marine Engineering
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE