<ul><li>Satellites typically conserve chemical fuel by using reaction wheels for orientation adjustments, avoiding thruster usage.</li><li>Zachary Tong has developed liquid metal reaction wheels as a simplified alternative to conventional designs, using Galinstan as the liquid metal.</li><li>The liquid-metal reaction wheels utilize magnetohydrodynamic drive and achieved torque production, although efficiency remains a limitation.</li><li>Despite challenges with current consumption, the resilience and potential efficiency of liquid-metal reaction wheels could be beneficial for satellites in the future.</li></ul>

Magnetohydrodynamic Motors to Spin Satellites

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