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> 2. Can their position, altitude, speed, course, and possibly
> origination/destination be assessed?
If the size of airplane is known, then all of these are easily determined
by simple geometry and the apparent size, position, and speed of the
aircraft. Radar would also permit these quantities to be determined
easily.
Originally posted by FredT
Im curious. did the expert explain how he surmised that the contrail was generated by an a/c moving at 8000 mph? local condition could not be the same and variations of high altitude winds and the like are unlikely to sustain a contrail that long.
Originally posted by FredT
Im curious. did the expert explain how he surmised that the contrail was generated by an a/c moving at 8000 mph? local condition could not be the same and variations of high altitude winds and the like are unlikely to sustain a contrail that long.
My other question is this: At what altitude are contrails not produced?
Originally posted by American Mad Man
It should be mentioned that the host was none other then Nick Cook, of Janes Defense fame. He's not someone to be taken too lightly in my opinion.