razgriz19
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question : Is this red afterburner from the start or its new indication an engine change from RD93 to ws-13 ?
question 2 : we can also observe that no smoke like in the AB residual fumes which was previously very visible , so have they been able to adjust the previous engine or again an indication of new engine?
I assume after seeing the patle patern on the visible part of engine are similar to rd93 if I am not mistaken ..
View attachment 354745
RD93
RD93 - the engine doesn't "smoke" on all throttle settings, especially in afterburner mode as "smoke" goes through complete combustion due to afterburn.
RD93 again