ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation ISR 2011 : SCUBSTER Submersible General Presentation

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Contents Introduction Concept Technical Report The Team Our Partners & Sponsors Questions

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Introduction The original project started in 2009 when Stephane Rousson with the support of his partners decided to release a new Submersible Concept with the Innovative Design support of Minh-Lôc Truong. The first aim of the project was to introduce a new wet submarine concept, with a design inspired by the Swordfish, focusing on manoeuvrability, undersea wide vision and high capacity for an extended autonomy. With the help of his partners and collaborators, the original Demonstrator prototype was first tested in Nice area during summer 2010 and has never stopped being optimized since. For its very first participation to the International Submarine Race, the team is pleased to introduce the Scubster Demonstrator.

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Concept The Scubster demonstrator was designed to validate a new hydrodynamics approach combining aestheticism, inspired by sea animal universe, and manoeuvrability. An original drivability & propulsion layout concept, based on a twin contra-rotating lateral propellers idea, enables a complete 6 degrees of freedom management only based on a 360°independent propellers orientation + left/right propeller coupling manual control.

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Technical Report Model Testing Hull Bill of Materials Safety Propulsion Principle Manoeuvrability Propellers Study Main dimensions Main Characteristics and calculated Speed Trials & Testing Prototype Cost

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Model Testing In June 2010, the ISTV Engineering School (Toulon – France) released a Test Report of drag measurement in the school model Test Basin with a model supplied by the Scubster team prior to Demonstrator manufacturing. The aim of this test was to predict the Drag Coefficient (Cx) and establish the hydrodynamic performance of the Demonstrator. A specific equipment (a pod equipped with a force gauge and driven at a pre-set speed range by an electric motor) was used for a 1:5 scale Test Model prototyped in stereolithography by E2R Company based on 3D CAD drawings performed by the Scubster technical team.

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Hull (1/2) Half hull structure (pieces of wood with mirror possibility) for matrix mold core manufacturing Hull half mold core preparation with carbon fiber sheets Carbon fiber + Epoxy resin pre-assembled hull Final assembly with gel coating prior to final sanding and painting

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Hull (2/2) Canopy kinematics Principle for easy opening and pilot access The empennage can be dismantled for compact packaging during transportation overseas and also gives apossibility to use an other set of stabilization surfaces

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Bill of Materials Hull :Carbon Fiber Epoxy Resin coated Canopy :Plexiglass Resin Transmission : Aluminium, Stainless Steel, Bronze, Glass Fiber filled Nylon 66, Carbon Fiber Tubes, Rubber Propellers : Epoxy coated Wood / Laser sintered Nylon with glass beads Empennage : Aluminium Seat :Carbon fiber Epoxy Resin coated Safety Buoy :Nylon, Aluminium, Stainless Steel, HDPE

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Safety (1/4) Emergency Exit : The wide canopy with easy access and opening allows a fast and easy ability to evacuate the submarine (actuated either from inside by pushing the canopy with hands or from outside by pulling the ring at the rear of it) Strobe : Leakproof (40 m) flashing LED at 1 Hz, located on the top of the submarine

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Safety (2/4) Safety Buoy : System overview

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Safety (3/4) Safety Buoy : The submarine is equipped with a handle + cable + friction stirrup mechanism (adapted bike breaking system) pinching a spool extension. The spool is easy to be properly rewind with a modified fishing gun reel (after slipping the spool flange down and rotating it for manifold clearance and access). When the handle is pinched, the stirrup does prevent the wire spool from unwinding. If the handle is released, the stirrup does open and liberates the spool for buoy natural pop up.

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Safety (4/4) Pressure Regulation : The standard 2 stages Pressure Regulator design doesn’t compensate the hydrostatic water pressure (Delta P) between the mouth and chest vertical locations which can generate a local external overpressure up to 0.05 bar (i.e. 0.7 PSI) on thorax muscles. This may cause a significant constraint against an easy breathing when the diver body top is close to vertical and does handicap overall C0 2 release and physical performance when racing. The 2 stages “Mistral” Mark II type does improve this constraint by a relocation of pressure regulator on the top of the air bottle, much vertically closer to the thorax muscles, reducing significantly the hydrostatic pressure (Delta P) on thorax for a much easier breathing and limited C0 2 storage. Furthermore, the relocation of the Pressure Regulator at the rear of the diver’s head allows to evacuate breathed out bubbles behind the diver which keeps the diver vision clear of bubbles. This new version is planed to be implemented for the ISR 2011 Contest ΔPΔP

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Propulsion Principle (1/2) +/-180° orientation control of propulsion axis (left & right independently) Left & right propellers coupling / uncoupling control

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Propulsion Principle (2/2) +/-180° orientation control of propulsion axis (left & right independently) Left & right propellers coupling / uncoupling control

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Propulsion Principle COMPLETE PROPELLERS COUPLING

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Propulsion Principle RIGHT PROPELLER DECOUPLING (RIGHT TURN)

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Propulsion Principle LEFT PROPELLER DECOUPLING (LEFT TURN)

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Manoeuvrability

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Propellers Study (1/2) Based on expected performance and achievable submarine speed for a given RPM and supplied Power, a first CFD Study of a 3 blades propeller was performed in April 2010 by ENSTA Bretagne (Engineering School Specialized in Marine applications; Brest – France)

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Propellers Study (2/2) After speed measurement in swiming pool and medical experts advices, the team designed a new propeller for optimized thrust at a lower pedalling RPM with a specific Propeller Calculation Software (Heliciel) : - External Diam : 490 mm - Blade profile : NACA Blade Curvature : 20° - Efficiency : 168 RPM & 1,25 m/s

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Main Dimensions

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Main Characteristics and Calculated Speed S ref x Cx : m² (from test results on Demonstrator with measurement of drag force vs speed in a Swiming Pool) Hull Volume : 1.45 m 3 Calculated Max Speed : 1.25 m/s ( W developped power

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Trials & Testing (1/2) Summer 2010 : First prototype trials undersea (Saint Jean - Cap Ferrat, Nice area) February / March 2011 : 2 campaigns of testing in an Olympic size Swiming pool (Piscine Jean Bouin – Nice)  Drag coefficient (Cx) determination by measurement of Drag Force vs. Speed  Traction measurement with 2 types of propellers (submarine moored)  Speed Up and Max Speed measurement  Drivability trials with left/right propeller coupling/decoupling & orientation April 22, 2011 : New trials in sea with last design optimization (Saint Jean - Cap Ferrat)  Reduced size of stabilization surfaces  Reduced tail volume (improved stability with better buoyancy center and reduced inertia)  Hull surface finish improvement

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Trials & Testing (2/2) April 26, 2011 : Biometric Evaluation with Diving Medical Experts ( SMMUM Marseille) Pulse record with variable dive depth during pedalling

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Prototype Cost (material and tooling only) Hull : - Carbon Fiber : Epoxy Resin : Empennage : Gel coating & painting : 300 Canopy : - Moulded Resin : 1600 Propulsion : - Propellers : Transmission :1000 Safety devices : - Safety Buoy & mechanical actuation system : Strobe : 40 Small equipement : 1000 Specific tools acquired for assembly : 500 Sub Total : € 9530 Package for transportation by airplane : 500 Grand TOTAL : € 9830

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation The Team Project Leader : Stephane Rousson Technical Team : Minh-Lôc Truong (Design) Bruno Sertier (Engineering) Divers : Terence Dewaele (diving instructor) Delphine Del Cont Robert Bonnar Stephane Rousson Team Coordination :Delphine Metayer Laure Magneron

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Our Partners and Sponsors Sponsors : Ministère de la Santé, de la Jeunesse et des Sports (French Sport Ministry) Aqualung E2R Sicomin Mapyachting Gates Nice Diving Lemer Partners : E-Props, Heliciel, Dynasub, Plexinautic Air france Cargo, Janine Robin, SMMUM Universities & Engineering Schools : Supmeca (Toulon - France) ISITV (Toulon - France) ENSTA Bretagne (Brest - France) The Scubster Team does also support sharks protection via Ecosy-Action (above painting from Belinda Bussotti, Artist in Monaco)

ISR 2011 – SCUBSTER Team Scubster ISR 2011 General Presentation Questions