[EMAIL PROTECTED] wrote:

> Much simpler.  Readjust the aircraft fuel controls to make a smokier exhaust. 

It'd take more than readjusting the aircraft fuel controls.  You'd have 
to replace the fuel injectors with less efficient designs.  But if you 
do that you have to worry about turbine inlet temperatures, and turbine 
coking and other nasty stuff.  Best to just leave them alone.

>  It will only cost 1-2% in additional fuel, and the particles wil be very 
> small, practically invisible.  

Do you have any idea how much money airlines are willing to spend to 
save 1-2% on their fuel burns?

> The result, however, will be reflected sunlight 
> and increased emission of IR radiation, thus cooling the earth, a sort of 
> small 
> scale "nuclear winter."  

Perhaps.  But don't forget that the particulates in question are soot, 
which tends to absorb heat rather than reflecting it.

> Then the Greens can feel good about flying out of 
> O'Hare. 

Indeed.


AP



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