2007-01-22 10:21:24 · 7 answers · asked by JUJU 1 in Cars & Transportation ➔ Maintenance & Repairs
They are aviation safety markers. For helicopters mostly.
2007-01-22 10:25:11 · answer #1 · answered by Anonymous · 2⤊ 1⤋
This is correct.
My understanding is that it is used to reduce a vibrational wind effect, called aeolian harp, that can create resonant and even distructive vibrations along the wire. These globes are usually placed on the wire in windy areas or where there is a long distance between towers, and significant sag. I have seen in most often on major transmission lines in the plains where there is a slight rise or dip in the terrain.
2007-01-23 16:09:49 · answer #2 · answered by Brendan R 4 · 0⤊ 0⤋
Aircraft cannot legally fly as low as utility lines. The insulators are there to keep lines from touching each other when they get blown around in a windstorm. There is no insulation on the high voltage wires.
2007-01-22 10:32:27 · answer #3 · answered by regerugged 7 · 1⤊ 1⤋
As everyone else seems to be saying, they are for airplanes to see. However I have heard of them being over water for another reason. They supposedly will float if the line falls. This I don't know for sure.
2007-01-22 10:29:18 · answer #4 · answered by Joseph T 2 · 0⤊ 0⤋
They are for aircraft to see the wires so they won't hit them if they are flying low.
2007-01-22 10:29:55 · answer #5 · answered by Anonymous · 0⤊ 1⤋
Those are for planes and helicopters, so the lines are visible. These are usually around airports and high traffic areas.
2007-01-22 10:25:16 · answer #6 · answered by Anonymous · 1⤊ 1⤋
They mark electrical lines so aircraft or other vehicles can see them.
2007-01-22 10:26:57 · answer #7 · answered by txpilot 3 · 0⤊ 1⤋