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Contrails
"Jeffrey Voight" wrote in message ... I'm curious about something I frequently see. When I look up and see contrails from airplanes, I often see more than one headed in the same direction, but separated by some distance. I figure this is a result of the trailing aircraft not wanting to fly along in the contrail left by the lead aircraft and/or the wind pushing the contrail to the side prior to the trailing aircraft. What I don't get is why I see them bend at or about the same location. Is this the result of the wind changing direction at this location? Perhaps the pilots are flying VOR to VOR and that bend is where the local VOR is? That is most likely. I would have thought that most flights at altitudes that produce contrails would be on GPS plans, so I've discounted this theory a bit. In heavy traffic areas aircraft are still tied to preferential routes along airways regardless how they're equipped. |
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