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HydroElectric Turbines, Hydro-electric turbines
Torque shafted. Tethered. Flexible driveshaft tethering.
Combines with AWECS. Water turbine. Hydro turbines. HydroTurbines.
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In the drive direction (not generating) consider electric ships, electric hang gliders, electric trains, electric submarines, etc. Tethering such systems in a current can be studied for the generation of electricity. The advent of superconductor technology is changing the game in some sectors.
AES :: all-electric ships
The great rivers & tributaries seem to be the focus of easily available &
fairly reliable alternative energy. We know of good nature friendly ways to
tap such currents at low cost without traditional dams (see below). Ocean
currents & seasonal winds are generally more difficult opportunities, but
there are exceptions. There is an easterly equatorial jet-stream at
mid-altitudes overhead that might prove a great resource as our field
matures. There are seasonal winds, sea-breezes, & nocturnal land breezes at
low altitude whose intermittent but predictable winds can serve
small flexible applications.
Developing a pilot project to tap river-flow would be good demo of practical
alternative energy for the Nigerian case. The following video clip shows a
very basic tiny demo of an "advanced" low-current concept that can scale