FMS Rafale nozzle

Replacement nozzles for the FMS Rafale, with a reduced exit diameter (52mm, which is 100% FSA), and closer to scale than the stock nozzle.

There are two external versions: one has turkeyfeathers open, the other closed. They are both the same internally.

Verson 2a has slighly thicker feathers than version 2, needed for some printers.

Print with minimal infill for weight savings.