The journey begins...

The team Archimede IV 2007 results Submarine pros/cons Potential amelioration projects Fabrication of the submarine -Hull design -Propeller and shroud design 2

2008 amelioration projects New reinforced nose New fin design & fabrication Future ameliorations New hull design New propeller system 3

Project director : Jonathan Beaulieu Pilot & Treasurer: David Ponton-Fournier Composites director& Treasurer: Alexis Payment Electronics director : Frédéric Bergeron Mechanics director : Alexandre Brière Finance & Marketing director : Maxime Mailloux Fabrication director : Nicolas Bezeau-Gervais 4

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AffiliationÉcole Polytechique de Montréal Submarine NameArchimede IV Category1 person, propeller driven Academic Support École Polytechique de Montréal Length Overall9‘3/8’’ (2.84m) Maximum Diameter28" Displacement18 ft 3 Weight in Air 115 lbs ColorWhite and Blue Propulsion SystemPropeller Team LeaderJonathan Beaulieu Team Members Maxime Mailloux, Frédéric Bergeron, Alexis Paiement, Nicolas Bezeau-Gervais, Alexandre Brière, David Ponton-Fournier Team Sponsors École Polytechnique de Montréal, La Boutique du plongeur, Laval Emballages Creopack International Inc., Montreal Gurit, Les Industries H.L. Plasto Ltée., SKF, CFP Lachine, Rodrigo Garcia de EDPS Constellation

7 Innovative gearbox design Propeller designed 900 rpm is reachable Lower drag coefficient with the use of a shroud Less power loss due to turbulence

8 Unefficient fin design Fins were too fragile and broke easily

Hull design verified using finite element methods. The hull not being symmetrical ameliorations are possible. 9

Fin design Submarine overall shape Submarine total frontal area due to previous pilot size (6’2” – 100 kg) 10

The team Archimede IV 2007 results Submarine pros/cons Potential amelioration projects 2008 amelioration projects New fin design/fabrication New fin installation Amelioration projects 11

12 Stronger fins, less breakable Bigger bonding area to the submarine Longer fins on submarine total length positively affecting submarine stability because of the fixed front part

13 Smaller directional fins to increase control and steering of the submarine More efficient movement of the fin directly affecting submarine stability in water

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nose was entirely fiberglass and very fragile

nose design has not changed Nose failure in previous competitions encouraged us to reinforce it Kevlar coated for 2009 which increases total mechanical resistance

17 Hull made out of a layer of corecell between two layers of fiberglass Hull counterpart made out of foam Mold then made out of that counterpart

18 Shroud made of fiberglass Designed in accordance with the propeller and submarine Gives better and more concentrated flow of water

Propeller – Designed by specialists (Nautican) Machined at École Polytechnique de Montréal Optimized for 900 rpm in accordance to 1:8 gearbox ratio 19

Gearbox made out of aluminium plates Gears from Boston gears made of steel Ratio of 1:8 connected to bicycled pedals with clips 20

Pop-up buoy with deadman switch Orange stickers clearly indicate release procedures 21

New and improved hull design Symmetrical with reduced drag Increased gearbox ratio for maximum output speed New bi-propeller system 22

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