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China's self-developed S4000 Stratosphere Airborne Wind Energy System (SAWES) climbed to 4,000 meters and hovered steadily at a test base in northwest China. The system proved reliable in extreme high-altitude conditions.
China's self-developed S4000 Stratosphere Airborne Wind Energy System (SAWES) climbed to 4,000 meters and hovered steadily at a test base in northwest China. The system proved reliable in extreme high-altitude conditions.