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-   -   Cool exhaust :-) (https://www.rcuniverse.com/forum/rc-jets-120/11607301-cool-exhaust.html)

SJN 11-30-2014 01:56 AM

Cool exhaust :-)
 
3 Attachment(s)
Saw this on facebook :cool:
Looks cool....


Left New nozzle Frank Turbine for FT 180 Raptor and old right. At least 500g of thrust more and less noise.

Chipper Griewahn 11-30-2014 05:44 AM

The new 737 has the same saw tooth design to keep her quiet

sysiek 11-30-2014 06:38 AM

I think vt-80 should get one ,the little giant it's so loud .

husafreak 11-30-2014 09:18 AM

The 787 too, I think it was the first. Just waiting for decibel readings on the ground and in flight now. BTW on the 787 that distinctive scalloped shape is also on the nacelle and probably helps reduce shear between the ambient air and the higher velocity fan air thus quieter or more efficient operation. The turbine exhaust is also getting this treatment. In our jets with internally mounted engines the amount of ambient air is very small and mostly just cooling the thrust tube. It is moving very slowly. We need an aeronautical engineer to chime in. And we will all need Bobcats to show 'em off!

SJN 11-30-2014 09:30 AM

3 Attachment(s)
Could be fun to see some test results.....if it works on fullsize, it must work on our engines too ;)

Joe Westrich 11-30-2014 07:56 PM

http://www.rcuniverse.com/forum/atta...1&d=1417341678Looks like orange juice makers


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