Factors Relative to High-Amplitude Galloping

Galloping is a type of vibration that can occur when wind acts on an ice-coated conductor. Aerodynamic data from static models in wind tunnels are used in a digital computer program that calculates the wind energy input for dynamic models at their most unstable static angle of attack. Experiments at large dynamic angles of attack with models of low structural damping are suggested. The design of a full-scale experimental galloping line and its expected maximum amplitudes is also suggested for evaluation of galloping mitigative devices or clearance requirements.