Chemical Reaction News

Figure 1: The Riptide Family of Compact UUVs (Photo: Riptide)

Taking UUVs Faster, Further & Deeper

primary and nickel-metal-hydride cells. With lithium primary cells, the standard micro-UUV can operate for over a week at speed.Through an exclusive partnership with L-3-Open Water Power the micro-UUV will pioneer the use of aluminum seawater batteries. This new technology harnesses the energy of a chemical reaction between seawater and specially developed, high-purity aluminum alloys. The result is an inherently safe energy storage solution with a dramatic increase in energy density. This technology will be tested in 2018 and is anticipated to be available commercially on Riptide UUVs in 2019.Through

Six micro-UUVs ready for delivery (Photo: Riptide)

UUV Manufacturer Aims Big by Going Small

a cruise speed of 3.6 knots.    This performance is adequate for many applications, but it can be improved upon. Through an exclusive partnership with Open Water Power Inc. the micro-UUV will pioneer the use of aluminum seawater batteries. This new technology harnesses the energy of a chemical reaction between seawater and carefully treated aluminum alloys. The result is an inherently safe energy storage solution with a dramatic increase in energy density.    With the use of this new battery technology the endurance of a micro-UUV can be extended well over 10 times the current

Warning for Breathing Gas Users

possible and shall be not greater than 10% of the UK8­hour time weighted average exposure limits which are specified in the HSE publication EH40. However, contamination can occur when gases or vapors are drawn into a compressor accidentally as a result of a leak or a spillage, or from a nearby chemical reaction or combustion process. As a result, any analysis of the compressed gas that only measures specific compounds is unlikely to detect any unforeseen contamination and this is the reason for FTIR being the preferred analytical technology for breathing gas analysis.  

Marine Technology Magazine Cover Sep 2019 - Autonomous Vehicle Operations

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