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Scott Ryals
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Is it feasible to recharge satellite's batteries utilizing a ground-based laser?
Usually a reverse situation is considered (i.e. recharging a difficult-to-access ground equipment via satellite beam). For example, sensing network over dormant volcano kept powered by microwave beam, allowing operations beyond lifespan of batteries with small maintenance (because power satellite can service entire world, in sequence).Scott Ryals said:Is it feasible to recharge satellite's batteries utilizing a ground-based laser?
trurle said:Usually a reverse situation is considered (i.e. recharging a difficult-to-access ground equipment via satellite beam). For example, sensing network over dormant volcano kept powered by microwave beam, allowing operations beyond lifespan of batteries with small maintenance (because power satellite can service entire world, in sequence).
The laser-powered satellite is considered usually only if very high power to weight (~20 kW/kg) is required - the only related talk i can remember was about laser-powered upper stages, to slash the cost of launch. Normal solar panels are good enough up to 5 W/kg satellites.
It would be interesting from engineering and exploration perspective to try and see how it will fail. My estimation of chances of "breakthrough starshot" reaching another star and communicating back to Earth is 0.00%.Scott Ryals said:What are your thoughts regarding the Breakthrough Starshot initiative?
The process of recharging satellite batteries with a ground-based laser involves using a high-power laser beam to transmit energy to the satellite's solar panels. This energy is then converted into electrical energy, which is used to charge the satellite's batteries.
Using a ground-based laser to recharge satellite batteries is more efficient because it eliminates the need for physical contact with the satellite. This means that there is less energy loss during the transmission process, resulting in a more efficient and faster recharge.
There are several benefits to recharging satellite batteries with a ground-based laser. These include increased efficiency, reduced maintenance costs, and the ability to recharge satellites in orbit without the need for a physical connection.
Yes, recharging satellite batteries with a ground-based laser is safe for the environment. The laser beam used is carefully directed and controlled, and there is no risk of harmful emissions or pollution. Additionally, this method reduces the need for launching new satellites, which can have a negative impact on the environment.
The time it takes to recharge a satellite's batteries using a ground-based laser depends on the size and type of the satellite, as well as the strength of the laser beam. However, in general, it is a much faster process compared to traditional methods of recharging, taking only a few hours to fully recharge a satellite's batteries.