The US Army Operational Test Command (OTC) has deployed small direct methanol fuel cells (DMFC) since 2009 to power test instrumentation on vehicles and systems undergoing operational testing. Operational testing of new vehicles and systems for future Army use is required to determine their suitability and effectiveness to support the Army’s mission. “Real soldiers using real equipment in a realistic environment” summarises the OTC approach to operational testing. Fuel cells and associated test instrumentation must be non-intrusive to the systems under test and be just as rugged as tactical equipment to ensure reliable, continuous data collection needed for performance evaluation.

Fuel cells have captured the US Army’s interest because they can perform on a par with conventional energy systems, such as batteries. These small ruggedized fuel cells used for test instrumentation power are a proven asset in remote locations, as the fuel cells can provide as much as 100 hours of power per cartridge and the cartridges are easily switched out without the loss of power. Early estimates from these tests have shown that an almost ten-fold reduction in cost per operating hour can be achieved using fuel cells as battery replacements – these costs include the cost of personnel involved with recharging and replacing batteries. These DMFC units can operate longer between refuelling intervals and can operate continuously while fuel is replenished. OTC will also evaluate smaller lightweight DMFC units, used to power test instrumentation carried by soldiers, replacing battery packs and reducing weight.

Currently JP-8 is the Army’s logistics fuel of choice, and at the current time there are no plans to adopt methanol as an additional fuel. Any decision to amend the current fuel choice lies with the Army, as adding a second fuel would add costs and complexity, therefore definitive operational benefits of using fuel cells would need to be identified.

About OTC.

The US Army OTC tests virtually every type of equipment used by the Army (excluding uniforms and medical supplies) and has a responsibility to seek and use new technology alternatives, when there is reduced cost and increased benefit. It conducts testing in the real environment, away from the combat arena, and augments it with simulation as needed to ensure an operationally realistic test. Evaluation reports are then issued to the Army based upon its findings. OTC does not make final decisions on adoption of equipment.

Source: US Army Operational Test Command (OTC)