The aggregation was able to fly their UAV for 48 hours and one minute on April 16 through 18 application aqueous hydrogen ammunition in a fresh cryogenic ammunition accumulator catchbasin and commitment system. This flight bankrupt their antecedent flight almanac of 26 hours and two minutes, which was set in 2009 application the aforementioned vehicle.
The analysis class said they were able to complete this best continuance flight with the aqueous hydrogen because it is three times denser than 5000-psi aeroembolism hydrogen. The cryogenic aqueous stored in the failing catchbasin allows for added hydrogen to be agitated onboard in adjustment to access flight endurance.
“Liquid hydrogen accompanying with fuel-cell technology has the abeyant to aggrandize the account of baby unmanned systems by abundantly accretion ability while still affording all the allowances of electric propulsion,” said Dr. Karen Swider-Lyons, NRL arch investigator.
According to the laboratory, although continued ability is accessible with hydrocarbon-fueled systems, these aircraft are loud, inefficient, and unreliable. Battery-powered systems are bound to endurances of aloof a few hours, so the advisers angry to aqueous hydrogen for fuel.
The team’s antecedent flight almanac was set on November 16 through 17 in 2009. It bankrupt its own antecedent almanac from a ages afore of 23 hours and 17 minutes.
The apple almanac for a continued ability UAV flight was set in 2010 by the UK-built Zephyr aircraft. This agent took flight for 336 hours, 22 account and eight seconds, according to the Federation Aeronautique Internationale (FAI). This aircraft is fabricated out of ultra-light carbon cilia and weighs aloof 110 pounds. Its 74-foot wingspan and lithium-sulphur batteries are what helped it to accomplish such abundant endurance. The Zephyr UAV bankrupt the antecedent ability almanac set by Northrop Grumman’s Global Hawk in 2001 afterwards aloof 31 hours in the air.
“This aircraft can advice clue pirates off the Horn of Africa, active the authorities about area and how fast backwoods fires are spreading, and ensure that soldiers’ communications abide artless back angry in aerial or arresting terrain,” technology close Qinetiq’s arch artist Chris Kelleher told BBC News in 2010.
US Naval UAV Breaks Its Own Endurance Record
tags: US Naval UAV Breaks Its Own Endurance Record