RE: Does a turbine run better with inlet ducting
The test was by RR in their wind tunnel, having a jet on the ground and putting smoke behind it will not give a true indication due to the ground effecting the airflow into the underside of the inlet, thier premiss was that as speed increases the airflow into the turbine has less influence on the turbine due to the ram effect, in fact they went into all sorts of fuel efficiency data above certain Mach speeds, but that is getting way off the point of this thread and our small turbines.
I suppose what all this boils down to is that most turbine users don't take as much notice of airflow into our motors as the EDF chaps do, but it seems sensible that if we have a smooth airflow into our turbines it must make its combustion more efficient, therefore decrease fuel consuption and increase thrust for the same fuel usage, well I seem to have answered my own question with the help of your thoughts chaps, thanks for your contributions.
Mike