This thing bears a strong resemblence to a contraption that a good friend of mine volunteered to test fly back in the 80's in Kelowna. ( I said good friend, not smart friend) 😀 . This thing was teathered to a trailer at the time and just as he got it to 100% one of the tail rotor blades departed and went whistling by his right ear. Of course the resulting vibration caused a catastrophic meltdown. My buddy had some sort of religious experience at this point and said his test pilot days were over. That's the last I heard of the thing till now.