Stumbled upon this on my Google Chrome suggestions:
I think this application can be useful for smaller drones operating at closer distances, but larger drones would certainly require laser beaming devices with significantly higher powerful energy output. This requirement may not be achievable with current systems without major design changes in order for it to be deployable onto the field.
The article also mentioned this:
The researchers have not revealed specifications on the system's range photoelectric conversion efficiency, citing the fact that their research could also be used for classified military applications. That is, of course, a large omission, as running a high-energy laser beam 24/7 to keep a drone airborne could prove to be prohibitively expensive. It would require massive amounts of energy, especially if the goal is to maintain a large fleet of ODDs, requiring numerous laser beams.
I don't think there is a need to run a high-energy beam 24/7 at that drone just to keep it charged. There is a simpler way to achieve 24/7 non-stop drone operation for a mission with technologies that are more permissible as of current:
1. Assign at least 2 or more drones of the same type and model for that particular mission;
2. Set up a recharging station at a location some distances away from the battlezone, where drones can return to recharge by laser beam;
3. Send out the 1st drone to conduct its mission;
4. Before the expected time of which the battery power of the 1st drone becomes lower than permissible is reached, direct a 2nd drone to take over the place and mission from the 1st drone;
5. The 1st drone returns to the pre-designated charging station to recharge with laser beam without landing;
6. Once the 1st drone has done recharging, it will then return to the battlezone to continue its mission;
7. This process is repeated with the 2nd drone for as long as the mission lasts.
Until the technologies associated with energy generation, storage and delivery have advanced far enough such that 24/7 charging of the drones using laser beam can be achieved, we'll have to make do with what we have.