Inside Unmanned Systems

JUN-JUL 2017

Inside Unmanned Systems provides actionable business intelligence to decision-makers and influencers operating within the global UAS community. Features include analysis of key technologies, policy/regulatory developments and new product design.

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57 unmanned systems inside June/July 2017 ENGINEERING. PRACTICE. POLICY. less and offer 54 percent more watt-hours per kilogram and 124 percent more watt-hours per liter. Similar improvements are expected over lead-acid batteries, the type often used in mi- cro-hybrid vehicles and electric bicycles. The zinc anodes are currently made simply by drying zinc emulsions in cylindrical molds over- night and baking the resulting disks in a furnace for a few hours, a process Burz compared to bak- ing muffins. The zinc anodes can also be produced in virtually any desirable shape, Rolison said. Further for Less When it comes to electric vehicles, the new batteries will be 30 to 50 percent cheaper than comparable lithium-ion devices, Burz said. He added that they feel they can have a battery ready for the market by the end of 2019. The Navy scientists are also exploring cath- ode materials other than nickel to use with the zinc anode. For example, zinc-silver batteries should show greater levels of power than lith- ium-ion batteries, and so should "be of benefit for unmanned applications," Rolison said. Researchers working on zinc-silver batteries should experiment with the membranes sepa- rating the anodes and with the cathodes as well as the electrolytes that allow electric charge to f low between the electrodes, Rolison said. Such work, which is needed to test whether such batteries can withstand large numbers of cycles of discharging and recharging, could be completed within 12 to 18 months, she added. EnZinc has a partially exclusive license for zinc-nickel battery use in wheeled electric vehicles. Licensing for other applications—in- cluding unmanned systems—and other cath- odes remains open. DMU30 Proven MEMS Technology Non-ITAR Multi-MEMS Blending OEM & Custom Solutions 'Tactical Grade' Precision DMU30 Precision MEMS IMU ...FOG IMU performance, not price 0.1º/hr 15μg 0.02º/√hr 0.05m/s/√hr 250ppm 250ppm 270cm 3 - 300g - 3W Bias Instability Random Walk Scale Factor Size - Mass - Power μ 0.05m/s/√hr 250ppm - 300g - 3W μ g 0.05m/s/√hr 250ppm - 300g - 3W

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