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L'armée américaine a établi un record de transmission d'énergie sans fil sur de longues distances grâce à des faisceaux laser
L'armée américaine a établi un record de transmission d'énergie sans fil sur de longues distances grâce à des faisceaux laser
Nr zdjęcia:
4267483
Data:
2025-06-17
Opis:
Picture MUST credit: DARPA The US military has set a record for transmitting power wirelessly over long distance using laser beams.The tech is being developed to provide reliable power sources to the military as well as humanitarian operations.By sending power through the air it does away with increasingly complex supply lines.The US defence agency DARPA which is responsible for the development of emerging technologies is working on the programme codenamed POWER to build transmission lines of light using laser beams to carry power as required.Previously, the POWER system managed to use a laser to beam 230 watts 1.7 km for 25 seconds, and an undisclosed lesser amount of power as far as 3.7 km.Now, DARPA has managed to increase this to 800 watts for 30 seconds at a distance of 8.6 km.The system is built around a ball-like structure called the Power Receiver Array Demo.It has a compact aperture that allows a laser beam to enter.This beam strikes a parabolic mirror that scatters the light and shines it on an array of dozens of photovoltaic cells.These convert the laser light into electricity.Both the emitter and the receptor were situated on the ground for the test which was done at a laser systems test facility at the U.S. Army's White Sands Missile Range in New Mexico.
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