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"Ugly Hack"/// Generator Suspended by Twisted Rope

Newton and others of his time suspended buckets of water by a twisted rope to study basic laws of motion and mass-energy. Similarly, one can suspend (by tripod or aerially) a generator by its shaft, from a twisted rope or bungee, driven by AWE, as a "crude" power regulation method. AWE input can then vary wildly according to transient vagaries of wind and wing, but generation output is nicely smoothed.

Fixed damped spring-lines (and electrical leads) constrain the generator case to oppose shaft input from rope twist. Input to the generator shaft is regulated to the average RPM of the twist input from the suspension point. RPM step-up transmission to the twisted line is still desirable. The complexity and cost penalty of a step-up stage is often exaggerated.

The suspended generator stores energy in two ways; its rotor mass acts as a flywheel and the entire generator is lifted by fast input to the twisted rope, storing kinetic energy returned to the electrical load during slackened input. The height potential of aerial methods is worth considering. Generators could even run up and downhill on tracks as the twisted rope varies.

It may even be practical to generate synchronous AC by such a minimal drive-train. Networked AC generators synch if nearly matched. A Watts-regulator on the generator shaft might help fine RPM like a figure skater controls spin. Load control is another option.

An elastomer "rubber-band motor" performs similarly to the twisted pendulum. Simply imagine the rubber-band twisted from one end as the other end outputs buffered twist. A helical spring on a shaft (as garage doors use) also does the job at low-complexity. All of these tricks avoid massive mountings, flywheels, clutches, sprags, and such.

Wear can be high on a twisted rope that is overworked. Hanging a generator by a rope is an ugly looking hack, but so what, its also kinda cool.

FairIP/CoopIP                       ~Dave Santos            July 29, 2010        M1894

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