Circles in the sky
From time to time from my strip in South Lincolnshire I observe the contrails of a large jet flying a circular route over an area of 50 miles or so.
These flight sometimes go on for an hour or more which leave concentric circles in the sky which show there is little deviation from the circular route flown.
I've identified the aircraft type as E-3 Sentries and can only assume they are on flight test and possibly out of Lakenheath, as the circular route would encompass that base.
It's been bugging me for sometime now and I'm sure there's someone knowledgeable out there that can put me right.
Thanks