At the end of 2017, Ballard Power Systems released its next generation high performance fuel cell propulsion system to power unmanned aerial vehicles (UAVs) or drones.

Ballard has also received a follow-on contract from Insitu, a Boeing subsidiary, for extended durability testing of the next-generation 1.3 kilowatt (kW) fuel cell propulsion system to power test flights of its ScanEagle UAV platform.

Ballard and Insitu have partnered over the past two years to integrate Ballard’s prior generation fuel cell propulsion system – a complete hydrogen (H2) power system for small unmanned fixed wing and vertical take-off and landing (VTOL) platforms – into the ScanEagle platform. Successful flight testing was announced in mid-2017.

The next generation fuel cell propulsion system delivers a number of important advances: increased power density, resulting from a new membrane electrode assembly (MEA) design; reduced cost, resulting from a combination of new MEA and one-step fuel cell stack sealing process; and extended lifetime. The increase in rated power, without any appreciable increase in size or weight, is a particularly significant development for UAV applications.

Phil Robinson, Vice-President of Unmanned Systems at Protonex, a Ballard subsidiary, said, “The Ballard and Insitu teams have collaborated closely over the past several years to integrate our proven fuel cell technology into the industry-leading ScanEagle platform. This new fuel cell has the potential to deliver a range of benefits compared to the use of an internal combustion engine, or ICE, to power the ScanEagle. These benefits are likely to include an increase in reliability and available electrical power along with a simultaneous reduction in audible noise, thereby enabling lower altitude missions.”

In addition to military use, the commercial market for drones is expected to growth significantly over the next few years, from 0.25 million working drones in 2017 to more than 2.5 million working drones by 2021. Applications are anticipated in such areas as agriculture, construction, environmental management, urban & rural surveying, mining, emergency response and law enforcement.