The Scientific World Journal

The Scientific World Journal / 2015 / Article

Corrigendum | Open Access

Volume 2015 |Article ID 419786 |

Óscar González-Espasandín, Teresa J. Leo, Emilio Navarro-Arévalo, "Corrigendum to “Fuel Cells: A Real Option for Unmanned Aerial Vehicles Propulsion”", The Scientific World Journal, vol. 2015, Article ID 419786, 2 pages, 2015.

Corrigendum to “Fuel Cells: A Real Option for Unmanned Aerial Vehicles Propulsion”

Received26 Mar 2015
Accepted16 Apr 2015
Published23 Apr 2015

In “Fuel Cells: A Real Option for Unmanned Aerial Vehicles Propulsion” some unclarities were detected in several figures shown in Table 2. To clarify the table, for the Horizon Energy Systems/AEROPAK, the weight (3.5 kg) has been replaced only by the FC weight (0.47 kg); therefore, the FC power density changes from 57.14 W/kg to 425.53 W/kg. Also, the FC power of PROTONEX/ProCore VI is changed from 800 W (peak power) to 280 W (output power), which implies FC power density of 686.27 W/kg.

We provide the updated Table 2.

Fuel typeManufacturer/modelFC weight (kg)FC power (W)FC power density (W/kg)Application/remarks

Chemical hydride cartridgeHorizon Energy Systems/AEROPAK0.470200425.53IAI Bird Eye 650 LE UAV 
10 A-21 V nominal 600 W with LiPo batteries; cartridge type I: 446 Wh/kg; type II: 607 Wh/kg Also used in Bluebird Boomerang Mini-UAV and Elbit Skylark UAV

Sodium borohydrideProtonex/UAV C-2501.2250208.33500 W peak power with batteries
Fuel 833 Wh/kg hydrated
Cartridge 1.8 kg, 1.5 l

Compressed H2Protonex/Spider Lion UAV (NRL)1.779553.67Spider Lion Micro-UAV 2005, 3-hour flight

Compressed H2Protonex/Ion Tiger UAV (NRL)1550550Ion Tiger UAV; 550 W FC (1 kg + 3.6 kg tank 0.5 kg H2), 26 h 1 m flight record in 2009
Powerplant total weight (including fuel and cooling) = 6 kg. Specific energy 1300 Wh/kg; 26 h endurance

Compressed H2EnergyOr/EO-310-XLE3.9531078.48Radiant Coral Technologies demonstrator UAV 1st flight February 25, 2013  
Hybrid; the weight includes auxiliary systems

Compressed H2EnergyOr/EO-210-XLE3.6525068.49The weight includes auxiliary systems

Compressed H2DLR/HyFish UAV31000333.33HyFish UAV 2007, 0.5-hour flight

Compressed H2UTRC/Gen11.781200674.16Helicopter UAV (October 11, 2009) FC (675 W/kg) Powerplant (500 W/kg) Minicopter Maxi Joker; 20 m flight

Compressed H2BCS/BCS5006.3550078.74Georgia Tech University UAV 2006 Powerplant weight 12 kg

Compressed H2Horizon Energy Systems/H-1001.3610073.53Johannesburg University Piper Cub UAV

Sodium borohydrideProtonex/ProCore VI0.408280686.27AeroVironment Puma UAV 2008 Endurance 9 h

Compressed H2Horizon Fuel Cell Technologies5650130Pterosaur Micro-UAV 2008. Oklahoma State and California State Universities 15.5 h endurance; FC 480 Wh/kg

Liquid H2NASA/Sensor Technology/AeroVironmentAeroVironment Global Observer (GO-1); 65,000 ft alt., 7-day endurance; PL 180 kg

Copyright © 2015 Óscar González-Espasandín et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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