JetBoots: powered propulsion for scuba operators

摘要

Developed by Virginia-based Patriot3 Maritime Division the JetBoots Diver Propulsion System has been designed to provide professional divers with a cheap wearable system that allows to keep hands free, that can be carried even when walking, due to its limited 12.36 kg weight ashore, and easily hidden. Made of two shrouded propellers fixed to the swimmer s thighs with the battery and computer worn on the waist, JetBoots can be used even in HAHO/HALO jumps and when jumping from a helicopter. It can provide a maximum thrust of 18.1 kg which means a speed up to 3.3 knots, depending on diver configuration, with a range of 1.6 to 3.3 nautical miles depending on speed, battery hot-swap underwater being possible, maximum user depth being 90 metres. The swimmer uses his navigation board as rudder and trimmer, the system being inherently redundant as it features two propellers. Recent upgrades include a two knobs configuration; the first one allows to initiate the system with a first click, which activates the computer controlling batteries and propulsion. Light shifting from blue to green means that the system is ready and battery is fully charged. The second click turns light off, then the cap is closed.