PowerLight's wireless system could keep military drones flying indefinitely, or be adapted as a directed-energy system for ...

PowerLight's wireless power beam receiver was mounted under the wing of Kraus Hamdani's K1000ULE. Credit: Kraus Hamdani Aerospace A long-endurance uncrewed aircraft has been powered in flight via ...

In a move that sounds like the wildest of science fiction, DARPA has announced its new Persistent Optical Wireless Energy Relay (POWER) program that plans to use lasers relayed by airborne platforms ...

Pictured above: U.S. Marines inspect a Tactical Unmanned Aerial System RQ-7B Shadow. The Shadow drone is capable of providing reconnaissance, surveillance, and a laser designator for air support.

Defining laser-beam power density. Power spectral density (PSD) is the measure of a signal's power content versus frequency. PSD gives designers an idea of how the power of a signal is distributed ...

Add Yahoo as a preferred source to see more of our stories on Google. The USS Portland test-fires a laser weapon. The photo captured infrared light to make the beam visible. Staff Sgt. Donald ...