Interestingly the auxiliary power unit(APU) turbines used in the US ARMY helicopters, Chinook/Apache/Blackhawk, are designated T62 and are basically the same as model aircraft turbines, albeit a bit larger. I recall the first time I ever worked on one I instantly wondered if they could be shrunk down a little smaller and used for models.....that was in 1986, imagine my surprise when I got back into modelling in 2001!

Anyone that want's to quote me please feel free to do so. My explanation is overly simplistic but I think most who read it will get the idea.

If anyone has any other questions regarding this subject please feel free to ask.