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11-05-2009 | 05:34 AM

#51

Bryce Watson

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From: Ft. Lauderdale, NJ

RE: Black Smoke???

Todd,

[link=http://www.youtube.com/watch?v=zZBrEdxICxY&feature=PlayList&p=D1553A5AC4A 6FA27&playnext=1&playnext_from=PL&index=4]This[/link] may be your [link=http://www.youtube.com/watch?v=V9X3TNUIIi8&feature=PlayList&p=D1553A5AC4A 6FA27&index=5&playnext=2&playnext_from=PL]answer[/link], or just convince those that you are working with that going to afterburner and eliminating the black smoke altogether would be better all around while preserving the stealthiness of the UAV. Of course, having the ablilty to make black, white and zero smoke does have it's advantages.

These guys seem to have it figured out.

[youtube]http://www.youtube.com/watch?v=i1on5pNgDP0[/youtube]

I really do think the temperature may be the biggest variable in the equation. Like Gene says, it may be a matter of somewhere in the turbine. Or it may be outside the turbine and downstream of the exhaust by a considerable margin, maybe even as much as a couple of feet where the EGT is down to somewhere below 400 degrees. It'll be interesting to see what the final answer is.

Good Luck

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