Back in the 1990's i were a greeny. I were a card carrying member of the wilderness society, did a permaculture course and a wind power course at TAFE and Peter Pedals were an inspiration. And, I had visions of living on top of a mountain in a tower with a big wind generator on top.. Yeah, i know. A real green.. First night of the wind power course the teacher explained resonance and why one should not attach the turbine directly to the residence. My first lesson of the requirement to actually research things before getting carried away with the eco-loon nonsense...
Back with the Antarctic wind geny.. From memory the failed ice base geny were one of a pair originally intended for one of the Bass Straight islands. When installed at the ice base they couldn't afford to send a high enough crane to assemble it to design height so it were 'shortened'. Thinking further on it I wonder if the concrete foundation budget were a bit short as well. Weight of foundation and the load spreading foundation 'wire' affects the tower 'bounce' or resonance feedback to an out of balance problem from the regular blade icing problem. The other possible issue is a shorter then design tower would allow the blades to hit the very turbulent area of wind eddys found at ground level which would set up a whole other set of resonant feedback issues on top of the out of balance iced up 'propellor' blades. Any pilot has a fair idea of wind feedback resonance from the propellor to the airframe from when ground run ups are done across or against the wind and the way the the aircraft either, or all - shakes, vibrates, or bounces on the gear as the wind gusts or changes direction.
...and the stupidity of putting up a large set of propellor blades in an environment of near daily icing conditions..
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