Originally posted by hollyjo
the sheer amount of the trails..i don't see how it can be normal air traffic.. not the numbers of them, mixed with the patters they're in... large
X's all across the sky, large grids...etc. that in no way seems normal to me....it's an everyday thing..
and i miss the blue skies driving home..
So. . . . If two planes fly on intersecting flight paths, so that the contrails form an “X,” that is not normal right?
Therefore only parallel flight paths are normal. But wait, “grids” of parallel lines are not normal either. . . . .
So what
is a normal flight path for a commercial air line?
How do airlines fly one flight from say Chicago to Atlanta, and another from Pittsburgh to St. Louis without the two flight paths intersecting?
What about this?
Suppose there are 10 flights from Minneapolis to Houston, (north to south) one every 15 minutes by different airlines and air freight companies.
The planes follow the exact same route over the ground for each flight. The atmospheric conditions are such that air mass through which all the
planes fly is supersaturated with respect to ice. Thus each plane leaves a persistent contrail. If the air mass were totally stationary, each plane
would be flying though the contrails left by the previous planes.
However, if the air mass were moving from west to east at a speed of 20 miles per hour, the previous contrail would have moved off to the east by 5
miles by the time the next plane arrived on the flight track.
What would this look like? A series of parallel lines, of course.
Air Traffic Growth
Try this link, let me know if it works:
www.hq.nasa.gov...