Accession Number : ADP001690

Title :   Field Measurements of Combined Icing and Wind Loads on Wires,

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Personal Author(s) : Govoni,John W. ; Ackley,Stephen F.

Report Date : JUN 1983

Pagination or Media Count : 11

Abstract : Four winter field seasons of simulated power line icing data were obtained during the years 1977-1981. Measurements were obtained of the icing characteristics, loads on the wire, and wind conditions simultaneously. Loads were measured using a single-axis load cell in line with the wire during the first three seasons, and a tri-axial load cell (resolving three perpendicular force components) in the 1980-81 winter season. Winds were measured using a vaned pitotstatic tube located near one end of the wire. Load records indicated maximum loads in the 400- to 600-kg range (> 50 kg/m) occurred from combined wind and ice loads. Correlations are made with wind speed records to establish drag coefficients for the various ice accretion types observed.

Descriptors :   *Ice, *Ice formation, *Wire, *Loads(Forces), *Cold weather tests, Field tests, ice formation indicators, Wind, Aerodynamic drag, Wind, Velocity, Transmission lines, Instrumentation, Methodology, Water, Drops, Freezing, Crystal growth, Clouds, Surface analysis, Mathematical prediction, Tables(Data)

Distribution Statement : APPROVED FOR PUBLIC RELEASE