The technique was demonstrated using a Trent 700 nacelle in 2015 and hence the total diameter of the free stream was almost 3m. The compressor flow from two Gnome turboshaft rigs provided a flight stream of Mach 0.1 across the surface of the lipskin. The rig was developed as part of the SANTANA project, led by Bombardier Aerospace and co-funded by Innovate UK. In this instance the nacelle was equipped with novel anti-icing systems which were evaluated for efficiency in simulated flight conditions. Click here for full details of the work.
Now the test concept has been proven, it is hoped that the experimental capability will be exploited for a wider range of future novel nacelle systems. The plenum and Coanda plug could be resized for different nacelles, and a smaller diameter would result in higher Mach numbers.