Vortex masts
a shimmying poleA slender mast held in the wind starts to shimmy from side to side as the air sheds swirls behind it, the same effect that makes wind turbine towers hum. Harness the shimmy at the base and you have a wind generator with nothing spinning at height at all.
- Precedent → vortex-shedding wind generators are a real, commercially emerging product categoryKnownSilent, low-profile, and safe near flight paths, the honest trade is roughly a tenth of a turbine's output for the same footprint.