DPRG mailing list archives: [DPRG] Counter-rotating props

Fri Dec 14 14:08:51 CST 2007

I wonder if he is flying in ground effect. So perhaps there isn't enough power to climb any higher. And if he starts moving, then the lift bubble collapses. Maybe that's why he bobs up and down and around. I don't have experience with helicopters but know that ground effect can be quite high.

However - you are right. That looks very dangerous. I would be worried about being impaled or chopped up by the spinning rotors in a crash or the fuel tank catching on fire right by the pilot's head.

DeltaGraph at aol.com wrote:     Very Nice,
 The pilot had the right idea. Don't fly any higher than you would dive head  first off a stepladder.
 Ron

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