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Plane on a treadmill.....part duex
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Plane on a treadmill.....part duex - January 4, 2010, 02:21 PM

helicopter on a turn table



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January 4, 2010, 02:22 PM

HAHAHAHA


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January 4, 2010, 02:24 PM



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January 4, 2010, 02:37 PM

Helicopter blade does not spin with regard to the ground, but the body spins, but will not go anywhere


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January 4, 2010, 03:22 PM

Of course it will, that's what the tail rotor is for
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January 4, 2010, 03:24 PM

Yes. It will absolutely take off. Assuming it doesn't get thrown off first,


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January 4, 2010, 03:24 PM

no doubt, it will take off because the rotational energy will get converted into light energy which gets converted into wind, pushing the helicopter up into the air.


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January 4, 2010, 03:33 PM

don't turn on the turn table


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January 4, 2010, 04:05 PM

Negative. Not enough lift over the rotors.



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January 4, 2010, 04:10 PM

Helicopters don't fly anyway. They beat the air into submission.
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January 4, 2010, 05:16 PM

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Helicopters don't fly anyway. They beat the air into submission.
That's exactly why Chuck Norris can fly!




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January 5, 2010, 09:29 AM

dont think the turn table will be turning as fast as the rotors.....so yes it will take off...


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January 5, 2010, 09:42 AM

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dont think the turn table will be turning as fast as the rotors.....so yes it will take off...
The rotors don't only have to turn faster than the table, they have the have to maintain a certain RPM in relationship to the air mass. It's a simple equation of rotor blade speed in relationship to speed of the air mass. For example a UH-60's main rotor spins at approximately 240 RPM, if the table is spinning at 33 RPM in the opposite direction the simple math says that the rotor needs to spin at 273 RPM to maintain the 240 RPM in relationship to the air mass (rotor speed in relation to the helicopter is really insignificant).

Tail rotor torque isn't always a direct relationship so you might get into trouble there, then you have dissymmetry of lift, retreating blade stall and all those other fun helicopter dynamics to ponder.


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January 5, 2010, 03:49 PM

I think the assumption is that the turntable is turning as fast as the rotor in the opposite direction. So the rotor speed would be zero rpm and the body of the helicopter would then be rotating at 240rpm. The occupants would then be plastered to the canopy and probably violently ill.

Unlike the plane on the treadmill where the plane would still fly, the chopper would not.
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January 5, 2010, 04:18 PM

I think it'll take off. The blades will still be moving threw the air at the same speed. Who cares about the body of the helicopter? If you get your 240rpm (or whatever) it shouldn't matter if it's powered by the engine or the turn table. It still reached 240rpm.
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