Turbine 6,5 m
Now we have a bigger turbine here - 650 cm (~22') long.
That ain't big, real big ones are 10 to 15 m long!
The opening is about 160 cm (5'8") in diameter, so a child could stand in it.
If you put something like this in the line of your kite the pull increases quite a lot, so the kite line has to take care of the pull of the kite AND the turbine!