posted on Feb, 16 2012 @ 06:02 PM
reply to post by RichardPrice
It's been shown that more efficient higher-bypass turbofans will tend to produce contrails, and especially persistent types, in a wider range of
temperature/saturation conditions....thus adding to the range of altitudes for contrail formation.
I should have added that as years go on, in the ConUS particularly, there are going to be more airplane retirements (those with lower bypass fans),
and replacements of newer and more efficient engines.
American Airlines comes to mind....they have a large fleet of MD-80 series. Of course, their bankruptcy is an issue, but IF they get folded into
another company, those may go.
Delta (as I write) still has a total of 151 MD-80/90s active. They will retire them all, eventually.
(AMR Corp [American] still has 201)
Just for example. Other airlines, such as Southwest, will likely continue to grow. With new orders for expansion, or just replacements.
Et Cetera. Hopefully, the myth and hoax of "chemtrails" will eventually dawn on people, with education. Though, I ain't holding my breath (pun!)
edit on Thu 16 February 2012 by ProudBird because: (no reason given)