Is that OK ? (Turbine to pipe gap)
11-22-2010, 05:52 PM
#26
RE: Is that OK ? (Turbine to pipe gap)
Based on various mfrs recommendations, I'd say that a tailpipe to bellmouth gap of 25-30 mm (1-1.2") is about right for 120-160 sized motors in a non-fully-bypassed installation.
Next question if the fuse is getting hot .. how does the space between the inner + outer pipe (and the space outside the pipe) get air? That airflow has to come from somewhere, and it is important for cooling.
I've had to open up some "NACA-like" openings in the belly of a few jets to deliberately get a source of cool air to draw in. Are there air sources other than the turbine inlet?
Dave
Next question if the fuse is getting hot .. how does the space between the inner + outer pipe (and the space outside the pipe) get air? That airflow has to come from somewhere, and it is important for cooling.
I've had to open up some "NACA-like" openings in the belly of a few jets to deliberately get a source of cool air to draw in. Are there air sources other than the turbine inlet?
Dave
