767 CF6 ENGINE RUN

It's a Vortex - From Wikipedia - A vortex (plural: vortices) is a spinning, often turbulent, flow of fluid. Any spiral motion with closed streamlines is vortex flow. The motion of the fluid swirling rapidly around a center is called a vortex. The speed and rate of rotation of the fluid are greatest at the center, and decrease progressively with distance from the center.
This engine is only demonstrating it's take off procedure. And does no harm whatsoever to the engine

@cesky69 ...and destroy a perfectly good engine??

true... but it would be worth it

careful he might lose his...

...hand.

if you had to sneeze you might lose a lung...your nose for sure..

actually it sucks and blows.........

You could have sold one of these to Grandma to clear out the bathroom after Gramps had spent 20 minutes in there.

Imagine if some little boy had just been given a new kite for christmas and hes just behind that wall about to let it loose

HAHAHAHAHAHAHAH!!! dude!! LOL

he is........