Limited autonomy is the biggest problem with current drones, but PowerLight Technologies has developed a system that solves it by laser charging in mid-flight.
According to LiveScience, This new technology allows unmanned aircraft to be kept in operation for days without the need to landoperating at heights of up to 1,500 meters.
The US Department of Defense is already integrating this solution into tactical drones for the Army, marking a significant change in how long-duration operations are managed.
Technology that offers continuous energy in the air
The system combines two elements that work in coordination to keep the drone in continuous flight. On the ground, a laser transmitter emits a beam of energy at the kilowatt levelthousands of times more powerful than conventional lasers operating in milliwatts.
Precision software constantly tracks the drone and keeps the beam focused even when it changes direction or altitude, ensuring power arrives without interruption.
On the drone, a 2.7 kg receiver captures that energy using photovoltaic converters optimized for high-intensity monochromatic laser light.
It should be noted that they do not work like normal solar panels, but are specifically designed to capture this type of concentrated energy and convert it into electricity that charges the battery in real time.
The best of all is that The system maintains two-way optical communicationtransmitting constant data on battery level, exact position and flight status so that operators can adjust power according to the needs of the drone.
Adjust power in real time for maximum efficiency
According to PowerLight, the control software connects directly to the drone system and allows the laser power to be adjusted dynamically.
That is to say, If the drone is close to the transmitter, the power is reduced to avoid wastewhile when it reaches the limit of 1,500 meters, it is increased to compensate for the distance.
This continuous adjustment optimizes energy efficiency and ensures system security without constant manual intervention.
In addition, the maximum operating height makes it compatible with most current tactical drones, and the best thing is that it does not require major modifications to existing devices.
Only the 2.7kg receiver needs to be added, making it easy to adopt into already operational fleets without the need to completely redesign the drones.
The US Department of Defense collaborated directly in the development of this technology, designed for situations where landing is not an option.
From the battlefield to rescue operations
For example, in territories without nearby bases, it maintains operational capabilities without depending on charging infrastructure. However, its use goes beyond the military.
In rescue operations it can search for people in remote areas for days without stopping, and in medical emergencies it can deliver supplies continuously without critical interruptions.
This technology will be implemented in the K1000ULE drone, designed specifically for the Navy and Army with long-distance flight capabilities and extended missions.
Goodbye to constant drone rotations
It should be noted that conventional drones have autonomy of between 20 minutes and two hours depending on the model, which requires keeping multiple devices rotating to cover a single mission.
But with laser charge, a single drone can operate indefinitely as long as it remains in range of the transmitterwhich reduces operating costs by requiring fewer devices for the same task.
It also eliminates the risks of landing in hostile or dangerous areas and allows immediate response without waiting for recharging.
Other experimental methods such as cables or induction charging have severe height or mobility limitations, while laser charging offers complete freedom of movement within the operating range.
PowerLight has solved the biggest obstacle of drones with a technically viable solution that is not impossible, but operational technology in the military integration phase.
If it works in defense applications, it could be extended to commercial logistics, infrastructure inspection or environmental surveillance.
For now it is limited to 1,500 meters high and requires direct line of sight between transmitter and drone, but autonomy is no longer the limiting factor.. The next challenge will be what to do with drones that can fly for days without stopping.