According to Russian media reports, researchers at the Moscow Institute of Engineering Physics have developed a hydrogen powered unmanned aerial vehicle. This type of drone does not vibrate during flight, allowing for the installation of sensitive detection devices. According to reports, this type of drone is mainly used for patrol and monitoring of oil and gas pipelines and transmission lines. The drone does not emit heat during flight, making it difficult to track its flight path. Drones using regular fuel can leave their flight traces in the air for more than 6 hours. To complement the use of this hydrogen powered drone, researchers have also developed specialized container hydrogen refueling stations that can fill the hydrogen cylinders carried by the drone within 5 minutes. According to reports, this hydrogen powered drone can stay in the air for more than 2 hours and, equipped with optical reconnaissance equipment, can perform corresponding tasks. (New Society)