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Old Dec 30, 2012, 06:17 PM
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Palmdale, CA
Joined Oct 2000
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Quote:
Originally Posted by ShoeDLG View Post
Sparky,

What if you were to measure the force on the scale in the case where you place a large plate just above the rotor of the single-rotor helicopter? I predict that you would see a noticeable drop in the force measured by the scale.

I suspect that you would have to fix the helicopter in place for this because a stable hover would be next to impossible to achieve. I predict that the lift generated by the rotor would go up even as the reading on the scale went down.
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Kinda needed more hands than I have.
I put the scale on an armchair, and photographed a Shaung Ma 9104 just above the scale, with and without a glass plate above the rotor, I got about the same numbers for the downwash.
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