reply to post by P-a-r-a-d-o-X-2
Hey, paradox...good, reasoned responses, thank you.
I had seen the 'barium' video before, didn't need to see it again. The thing that stands out in my mind firstmost....is a general hysterical
reaction, not based on reason...
I'll have to check my periodic table, but as I recall, barium is in the category of heavy metals.
Suppose, it's possible, as such it could be atomized and survive the 880 degree C temps inside the combustion chamber of a jet engine, and not
precipitate onto the turbne blades as it cooled....collecting on the titanium, and thus destroying the efficiency of the engine in the process....
I'm not a metallurgist, nor do I know the melting point of barium...but, again suppose it is atomized in some way....it would not fall directly to
Earth....it would behave as any other microscopic dust particle....be carried on the upper winds, buffeted and blown around, to possibly fall
somewhere when liquid water formed around it and it made rain.
I took the liberty of looking it up on Wikipedia, and here is just a bit of what I discovered (I love learning)...Ba is number 56 on the Periodic
table. It is not found in nature because it reacts in air to form various compounds. (Wikipedia has a full list of variants and applications).
Oh....and Barium melts at 727 degrees Celsius. Seems very unsuitable for surviving the temperatures of a jet engine combustion chamber.
[adding]....I felt I was been generous, with the 880 degree Celsius figure...and, I was. You see, what we pilots see on the guages is actually the
EGT, or Exhaust Gas Temperature. And, I'll admit, 880 degrees is usually seen as a maximum for engine start, and then again for take-off power or
Max Continuous Thrust settings (the actually numbers vary by engine type, but I chose a high value). BUT...this is the 'exhaust' temperature...much
hotter inside the combustion chamber. Just thought I'd clear that bit up.
[edit on 5/26/0808 by weedwhacker]