Team Archimede
École Polytechnique de Montréal
Québec, Canada
ISR #11, june 26 – july 3, 2011
• The Project
• The Organization
• The Submarine
– Safety Requirements
– Hull
– Fins
– Drivetrain
– Propeller
– Steering System
– Inboard Computer
– Future projects
• Conclusion and questions
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• Desing a freefloating vehicule that fully
encapsulates the racer
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Direct propulsion
Provide safety and lifesupport systems
Unpressurized vehicule
One person submarine propeller driving
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• ISR #9
– Fastest speed in our category : One person propeller
with 6,473 knots
– «Forces Avenir» winner : Quebec wide technological
and innovation contest
• ISR #10
– 7th place
• ISR #11
– Hope to be amongst the best and accomplish fast runs
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• 11 students
– Mechnical, Electrical and Industrial engineering
undergraduate
– Canada, France and Tunisia
– 1st to 4th year of study to ensure future
development of future submarines
• Each member specially assigned on systems
based on experience and interests
• Three members executive directorate for
administrative aspects
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• Pop-up buoy
– Reel cable
– Pneumatic dead man switch easily reachable
• Bright orange stickers and lines
• White flash strobe light
• Secondary air supply
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Profile redesign to a circlular section
Fluid dynamics analysis with Ansys Fluent
NACA axisymetrical
Sandwich composite hull
– Multi layers of fiberglass
– S-Foam corecell for buoyancy
• Fabrication process
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Wet lay-up
Counter-mold (plug)
Mold
Two halves hull joined by additionnal corecell
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• Theoritical aspect
– Drag
– Profile
– Lift forces
• NACA 0010
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• Design with Catia V5
Fixed part
Mobile part
Fin shaft
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• Fin thickness reduced
• Injection technique with bidirectionnal
carbon fiber
• Fixed and mobile parts to reduce stress and
induced drag
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• CFD simulation (pathline flow)
• Convergence analysis
• FEA and optimization Analysis
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• Results
Velocity vectors of water
flow around the fins
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• Carbon fiber injection
– Halves molded and joined with eposy resin composite
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• Adjustable to fit differents pilots
• Provide an easy way to adjust the gear ratio
• Stronger and more reliable than previous
propulsion systems
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Provides 8” of
adjustments
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• Three stage transmission
– Bicycle transmission
– Two helicoidal gear sets
(vibration purpose)
• The bicycle transmission
provides adjustment of the
gear ratio
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• Ergonomy study for space
• Verify the ability to operate the propulsion
system
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• Forces analysis on the hull to verify the
rigidity of the hull under stress
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• Same propeller as Archimede IV
• Maximize the propeller efficiency
– Two blades and minimum BAR ratio to increase the optimal
diameter
– Faster flow around the tips of the blades
– Higher Reynolds number
– Best propeller efficiency
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• Reverse engineering process
for blades and shroud with
the Creaform 3D laser
scanning gun
• Skew distribution specially designed for the wake and
pressure distribution of the bassin in depth
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• Fixed nozzle around the propeller
– Assembled with pre-swirl stators
to balance the rotating flow of to fluid
through the propeller disk
• MARINE profile for the shroud
– Minimum clearance between blade tips and inner
surface
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Great manoeuvrability with small corrections
One hand control for pitch and yaw axes
Entirely mechanical system: easy to set or repair
Tested to be effective at 2 knots and above
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• AA Batteries Powered
– Innovation: with Hall effect ON/OFF system
– Transistor controlled power
• 128 X 240 dots LCD Screen
– Two-angles display
(Pitch and Roll)
– Crank RPM speed
– Recordable Max speed
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• Custom PCB
– Designed with Eagle software
– Assembler and C language programming
• Waterproof Box
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• Short term
– Electrical communication system
– Contra-rotating propeller
– Injection molding process for the next hull
• Long term
– Participate and gain experience in non-propeller
categories
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• University pool
– Balance
– Communication
• 75 % divers
• Better run yesterday than overall performances 2
years ago
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• Summary
• Main innovations
– Composites
– Adjustable drivetrain
– Fins
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