by Ian Warren » Tue Sep 22, 2009 1:49 am
Great find Gary ..it impressive to see the gradual climb and comparing an airliner the other way round the norm for a contrail is the blue sky background , at alt these things operate within a 12 mph region of going to fast to slow , that basicly your TR-1U , a civilian U-2 , well for NASA an ER-2 has sortied out off Christchurch , its mission was to measure the jet flux and omissions from Concorde .