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Old 18th Mar 2017, 01:24   #1 (permalink)
Join Date: Oct 2003
Location: Canberra Australia
Posts: 1,304
Unusual Con Trail

Just observed an unusual con trail which had regularly closely spaced mini cumulus like blobs developing below the main con trail stream.
Aircraft was likely a twin jet.
Am finding it hard to comprehend how the blobs could be triggered from steady state conditions at a rate of about 10 per second considering the aircraft's air speed. The only non steady state I can think of would be engines out of synch.
Milt is offline   Reply With Quote