Researchers from the Harbin Institute of Technology have proposed a novel wireless energy transmission system to support lunar exploration. By utilizing laser beams to transmit power from solar-powered stations on sunlit crater rims to rovers operating in permanently shadowed regions, the team aims to overcome the limitations of traditional battery systems. Their study, published in the Journal of Deep Space Exploration, utilizes statistical modeling to optimize the placement of these stations. This approach significantly enhances energy coverage and connectivity, potentially providing a reliable power infrastructure for future scientific missions at the lunar south pole.
The lunar south pole is a primary focus for international space agencies due to its unique geography. Elevated ridges in this region experience nearly constant sunlight, while nearby craters remain in perpetual darkness and are thought to hold vital water ice. Because rovers inside these craters cannot utilize solar panels, they currently rely on limited battery capacity. The proposed laser-based network would allow solar arrays on the peaks to convert sunlight into laser beams, which are then transmitted to receivers on rovers, converting the light back into electricity for continuous operation.
To refine this concept, the research team analyzed data from the Shackleton crater. By strategically repositioning transmission stations by approximately 330 feet, the researchers were able to increase the network’s effective coverage by over 35%. Simulations indicate that this optimized configuration can provide a stable power supply to rovers across a distance of roughly three miles. By creating a connected network of energy stations, the system eliminates the need for heavy, large-capacity batteries, allowing for more efficient and extended exploration of the moon’s most challenging and scientifically significant environments.