Underwater Magazine -September/October 2013 - (Page 47)

new gear new gear Exosuit (1 ATM) ADS The Exosuit Atmospheric Diving Suit (ADS) is a one-atmosphere suit that affords a pilot the opportunity to work underwater without being exposed to the pressure. The Exosuit can be deployed as a tethered surface-oriented: air supply from surface (LP compressor or HP cylinders) with hardwire comms, surface air power positive displacement pump-down system (patent applied) with double acting pressure joints. It can also be deployed as a self-contained autonomous and free-swimming unit. System Description: Height: Variable 5’6” to 6’4” Beam: 20” (torso), 30” elbow to elbow (average) Weight in Air: 120 lbs (bare), 160 lbs (with tanks and scrubber pack) Operating Depth: 300/600 ft (100/ 200m) Payload: 200 lbs (90kg) Life Support: 48 man hours Two cylinders carried externally; 02 portside and diluents gas starboards, or both 02, both air, or both bottom mix Viewing: Tear-drop shaped, acrylic dome port. Manipulator: Basic pincer manips or fourfingered prehensor “hand”. Traditionally, Atmospheric Diving Suits (ADS), have relied on a two-jawed “manipulator” in place of the human hand. This manipulator operates much like a pair of pliers; by squeezing the handles inside the ADS, a set of jaws close on an object outside of the suit. The difficulty involved in executing an underwater task that requires significant manual dexterity can be demonstrated on the surface by attempting the same task using only two pairs of pliers. With practice and good eye/ hand coordination skills, the operator can perform simple tasks; with extensive experience it is possible to do some rigging, shackle-pin removal and replacement, and similar work; however, to complete complex tasks, an ADS pilot needs the ability to use his or her hands in the same manner as a Scuba or helmet diver. Until now this has not been possible. The kinesiology of the human hand is amazingly complex, but it comes down largely to the ability of the human thumb to ‘index’. That is, to directly oppose each of the individual fingertips, to centre itself if more than a single finger or digit is employed, as in grasping, and to do all of this reflexively, without conscious thought. A simple experiment will serve to illustrate the point: put a pen or pencil down on a desk or table. Pick it up with your thumb and forefinger. Note that your thumb is now directly opposite your forefinger. If your thumb and your forefinger were offset, then the pen would simply spin out of your grasp. Try it. Now pick up the pencil again with your thumb, your forefinger and your index finger – a “threejawed” approach. Again note that your thumb automatically indexes to the centre – the space between the two fingers. Try it again with three fingers and your thumb. Same result: your thumb indexes to the centre. It is not simply the “opposable thumb” that gives some primates (including humans) the ability to carry out complex manipulative tasks, it is the “indexable” thumb! Previous attempts to build such a device have achieved reasonably close mechanical matches to the geometry and motion of the individual phalanges of the fingers, but the designers and engineers were not able to provide a true, rotating, index-able thumb to oppose those fingers. The Nuytco ‘Prehensor’ does just that. Pick up a ball, throw it against a wall, and catch it on the rebound. Pick up a pen and sign your name on a piece of paper. Pick up a nut with the tips of the thumb, forefinger and index finger, start it on a bolt in exactly the same manner that you usually do, then spin it up the flange with one finger before you pick up a wrench to tighten it. The unique capabilities of the ‘Prehensor’ were developed specifically with the Nuytco ADS ‘Exosuit’ in mind, but the system can easily replace existing simple jawstyle manipulators for use on ADS units. The EXOSUIT swimmable ADS is the ideal solution to obtain the same benefits of a free-swimming diver without the hazard of exposing a person to the dangerous pressures of the depths of the ocean. The mobility of the suit combined with the dexterity of the Prehensor gives you the ability to perform tasks underwater as easily as on the surface. This suit will save lives! ‘Walking’ Suit cost: $395,000 USD Thruster Pack Suit (includes 4 Permanent Magnet thrusters) cost: $685,000 USD Gallant Aquatic Ventures Intl. 450 West Davis Blvd, Tampa, FL 33606 USA Phone: 011.858.337.9418 Fax: 011.813.374.8004 www.gallantaquatic.com Nuytco Research Limited 216 East Esplanade North Vancouver, B.C.V7L 1A3 www.nuytco.com www.adc-int.org ■ www.underwatermagazine.com UnderWater 47 http://www.gallantaquatic.com http://www.nuytco.com http://www.adc-int.org http://www.underwatermagazine.com

Table of Contents for the Digital Edition of Underwater Magazine -September/October 2013

Board of Directors
President’s Message
Executive Director’s Message
Jascon 4 Rescue
Croc Country
Saturation Diving and Microbes
Commercial Diver Training Requirements
Emergency Repair at Sewerage Plant
California High Schools Prevail in International Student Underwater Robotics Competition
Revolutionary PileJax™
Safety and Efficiency through Automation
Diver Gas Management in the Bell
Unique System LLC (USA) Completes the Upgrade to the Ranger Offshore, Inc. HOSS-1, 6-Man SAT System
New Gear
Underwater Intervention 2014
New ADCI Members
Index to Advertisers
2014 ADCI Scholarship Fund Raffle

Underwater Magazine -September/October 2013

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