B.A.T. supports additional airshow smoke effects beyond the original red/green smoke emitted from the wingtips. These three additional smokes are red, white and blue, and are toggled cyclically with the same airshow smoke key assignment. The point of emission is the first engine smoke hook.
To enable these extra smokes, in the conf.ini [Mods] section these lines must be present:
AirShowSmoke=4 //0=original wingtip red/green; [1=red, 2=white, 3=blue, emitted from engine hook, cycled]; 4=smoke screen
AirShowSmokeEnhanced=1 //applies to new AirShowSmoke (not red/green wingtip), 0=single effect only, 1=two additional effects to lengthen
The current implementation AirshowSmoke can equal 0, 1, 2 or 3. When set to 0, only the old red-green wingtip smoke is created. When 1, 2 or 3 are set, the smoke toggles between the new red, white and blue effects. AirShowSmokeEnhanced enables the generation of two additional effects, to fill in gaps and make for a longer smoke trail.
In my experiment I've added another smoke effect to serve as a smoke screen, enabled when AirShowSmoke=4. This effect has the three different effects lasting 15, 30 and 60 seconds, growing to a much larger size, with differing negative vertical velocity to create a kind of 'curtain' that is higher than it is wide. The screenshot pair below shows this.
This is just an experiment to see what's possible in making a reasonably effective smoke screen. In this implementation it can apply to ANY plane having the appropriate engine smoke hook. A proper implementation would have the effect tied to just certain planes, or better yet to a weapon that is a proper smoke dispenser.
In this test run the plane is at about 800 feet AGL.