I once met a person that never drank water, only soft drinks. It’s not the unhealthiness of this that disturbed me, but the fact they did it without the requisite paperwork.
Unlike those disorganised people I have a formal waiver. I primarily drink steam and crushed glaciers.
That (chinook-style solution) only works if both rotors are the same size and speed.
Perhaps Sikorsky’s tethers to the ground worked around the problem for that photo anyway. Not sure.