"Jim Macklin" wrote

You can drive the alternator with a propeller just like the
old generator, it just makes power with less drag.

You do need to use a special propeller, that is designed for converting
thrust into power, instead of power into thrust. The more curved surface
needs to be on the backside of the airstream, unlike a regular prop.

For a generator, you can use a 12 volt motor with magnets in it, and a
voltage regulator added to it.
--
Jim in NC