Pictures of the nozzle extension handling fixture. Once I got the camera high
enough to go over the top of the extension, I could no longer see through the
viewfinder, so these were "shooting blind."
Picture 4 of 4.
This picture (taken on a sunnier day than the previous three photos) really
shows the construction of the nozzle extension: There are 23 rows of
overlapping shingles. The nozzle extension itself is double-walled, with
cooler turbine exhaust gasses (cooler in comparison to the main exhaust)
entering at the top of the extension and
venting through gaps in
the shingles, film-cooling the wall of the extension.