With regard to the F 22 photos; what causes the "balls" of fire or
plasma in some jet exhaust photos? For continuous combustion the
exhaust should be steady like a propane torch flame with the blue
cone.

Dale Davies

    I have the hunch that the 'balls of fire' may be some kind of a
   stationary wave arising in the hot gas jet of engine, some areas
   having a higher density, and thus a different color, perhaps a
   different temperature too, but I have no data to support this
   concept.
           Good weekend, regards. Salut

          Jose Gros-Aymerich
            Madrid, Spain

The Rotary Engine News Letter. Powered by Linux. ACRE NL web site.
http://www.rotaryeng.net. You Tube http://tinyurl.com/beqqxas.
Copyright 1998-2013 All world wide rights reserved.