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Originally posted by nerbot
My point is: how can three types of plane leave three different types of trail in the same area at the same time.
Just realised that the direction the planes are flying (in Leeds, UK) is towards the military installation known as Echelon, the communication interception base North of Leeds.
Anyone know of any actual military bases in that direction, or how to find them on Google Earth?
Originally posted by shrunkensimon
Your questioning my visual skills, what do you expect me to say in return other than 'i know what i saw'. My home is very close to Heathrow airport, i have lived under the flightpath of many routes for years, including the concord when it was still in use..
I know what i saw.
Because they were at different altitudes. The window where contrails are formed is actually quite small. IIRC it's just a few thousand feet. Higher or lower and there isn't enough moisture in the air for a contrail to form.