Anyway, imagine an ultralight powered by the static electricity that is created by friction during flight. Im no expert with electricity OR friction but what i do know is that air resistance=friction and friction can make small amounts of static electricity. Maybe you could have some kind of micro exposed wires on the outside of the aircraft collecting static and transefering it to a battery of sorts which in turn powers a small prop.
I beleive in the future there will be advances in this kind of stuff and that we may be introduced to ideas like this more often in civil aviation.
just post your opinions and be nice - it's only my second thread