A drone developed by the U.S navy has broken previous endurance records by flying 48 hours without refueling. The 'Ion Tiger' uses a new type of cryogenic tank to store liquid hydrogen fuel to achieve this breakthrough. The drone also uses electric engines rather than combustion engines. The Naval Research Laboratory says their approach has additional logistic benefits, since liquid hydrogen can be produced from water on site rather than having to transport solid fuels in bulk.
US Navy?s liquid hydrogen drone flies for record 48 hours ? RT USA
What are the implications of this for civilian transport? More importantly how does this affect the continued expansion of drone warfare?
Personally I doubt that this technology will be used for civilian transport for a good few years due to production of hydrogen fuel on a mass scale is still under research however breakthroughs have been recently made in this area too as Virginia Tech have found a way to extract large quantities from any plant.
Breakthrough in hydrogen fuel production could revolutionize alternative energy market
Militarily it's a massive breakthrough for recon drones and no doubt they're already looking at how to transfer this technology to larger weaponized drones such as the Predator. Not being particularly knowledgeable on the matter of drones and their applications I'm more than open to correction and education though!