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Hydrogen-powered unmanned plane sets 26-hour flight endurance record

Washington, December 1 (ANI): The Naval Research Laboratory's Ion Tiger, a hydrogen-powered fuel cell unmanned air vehicle (UAV), has flown 26 hours and 1 minute carrying a 5-pound payload, setting another unofficial flight endurance record for a fuel-cell powered flight.

The test flight took place on November 16th through 17th.

The electric fuel cell propulsion system onboard the Ion Tiger has the low noise and signature of a battery-powered UAV, while taking advantage of hydrogen, a high-energy fuel.

Fuel cells create an electrical current when they convert hydrogen and oxygen into water and heat.

The 550 Watt (0.75 horsepower) fuel cell onboard the Ion Tiger has about four times the efficiency of a comparable internal combustion engine and the system provides seven times the energy in the equivalent weight of batteries.

The Ion Tiger weighs approximately 37 pounds and carries a 4- to 5-pound payload.

This latest flight test improves on Ion Tiger's previous unofficial flight endurance record of 23 hours and 17 minutes that took place on October 9th and 10th.

NRL has now demonstrated that PEM fuel cell technology can meet or surpass the performance of traditional power systems, providing reliable, quiet operation and extremely high efficiency.

Next steps will focus on increasing the power of the fuel cell to 1.5 kW, or 2 HP, to enable tactical flights and extending flight times to 3 days while powering tactical payloads. (ANI)

Unmanned air vehicle debuts at Aero India 2009

Bangalore, Feb 12 (ANI): Mantis, an autonomous Unmanned Aerial Vehicle (UAV) developed by BAE Systems, Europe's biggest defense company, made its international debut at the ongoing Aero India 2009 in Bangalore.According to BAE, Mantis can be commanded and controlled by the person on ground through computer who can decide its route and even can decide its height."Special features are that it is very light weight, compact, flexible in operation and can be easily be carried on the back.....
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