US Navy’s liquid hydrogen drone flies for record 48 hours

Russian Times - A drone developed by the US Navy has broken its own endurance record by staying in the air for just over 48 hours. The 'Ion Tiger' used a new cryogenic tank for the liquid hydrogen fuel feeding its fuel cells to achieve the breakthrough.

Keeping a drone in the air as long as possible is a chief task for a UAV operator, especially in surveillance. One approach is to use fuel that packs a lot of energy for its volume, like hydrocarbons; drones like the MQ-9 Reaper can fly for 30 hours without landing for refueling.  Read more.

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