A tiny satellite, a powerful laser beam, and a large ground-based installation: that was the concept outlined in a 2010 document. The beam would supply most of the energy the satellite needed to reach space.
Instead of carrying all its launch energy aboard a rocket, the satellite would receive it remotely. According to the document, the same beam might also give the satellite a boost after it reached orbit around Earth.
How Can Light Become Thrust?
The laser would not push the satellite like a hand. The idea is for the launch vehicle to absorb energy from the beam and convert it into thrust, the force that propels it forward. But the document’s summary does not clearly explain which part of the vehicle would capture the beam or exactly how it would generate thrust.
The document concerns satellites weighing less than 10 kilograms. It proposes that the method could put them into low Earth orbit, a relatively low orbit around Earth. The authors say it could cost less than conventional launches for small payloads.
The Same Beam, After Launch
The proposal does not end once the satellite reaches orbit. According to the document, laser energy could also be used to change its motion there. Rather than carrying all the energy it needs, the satellite might receive a boost from outside.
For that to work, the beam would have to hit the vehicle with extreme precision. The air between the laser and the satellite could also weaken the beam. Operating the system would require a large laser installation and equipment to aim it accurately.
Was the Idea Tested?
The document includes photographs of Lightcraft flight tests, alongside a description of a laser-based launch vehicle. In other words, vehicles and propulsion concepts of this kind were tested. But the material provided does not show a tiny satellite being launched into space this way.
What Remains Unknown
The document presents a possibility; it does not prove the method would be affordable or practical. It says success would depend on precise aiming, minimizing energy loss in the atmosphere, and having a reliable, cost-effective laser system.
A small satellite in orbit, with a beam reaching it from far away. The question is whether the idea can become a system that actually works.
