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Old February 20th 14, 12:36 AM posted to rec.aviation.soaring
Steve Leonard[_2_]
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Default Does anyone use a tug tow hook that releases automatically whenglider kites?

Chris has hit the nail on the head with his testing and reporting. When it goes wrong, it goes wrong fast. Faster than you can possibly react. We can try all we want to teach how to not do it, but it will sometimes happen. Why not come up with a system that will minimize the risk to the towpilot? I think we have concluded that for now, we cannot eliminate it without creating other significant problems.

If we are considering an automatic system, why wait to full nose up elevator and nose down 20 degrees? As Chris said, if you are there, you are probably doomed. If the nose is down 10 degrees (or maybe even 5?) and the elevator is half way to full up, something is wrong. Would you agree? On tow, elevator is up, nose is up. On descent, elevator is down, nose is down.

Why not develop and test a parallel releasing system that has inputs from a gyro for pitch attitude and a simple sensor for elevator position? Test at safe altitude, as Chris and company did. I know this is not going to prevent kiting, but if we can reduce the risk when it happens and maybe not even add bad failure modes, it should be well worth the effort.

Just my thoughts.

Steve Leonard