Presentation overview
• Brief history
• Archimede VI
• Past events
• Budget 2012 - 2013
• Team members & competition crews
• Design
• Hydrodynamic
• Fins
• Mechanical
• Conclusion & Questions
International Submarine Races # 12 – Team Archimede
2/20
Brief history
• Founded in 2001
Archimede I
Archimede II
Archimede III
Archimede IV
Archimede V
Category
2 people prop
2 people prop
2 people prop
1 person prop
1 person prop
Events
HPS 2002
ISR 2003, HPS 2004
ISR 2005
HPS 2006, ISR 2007, 2009
ISR 2011, EISR 2012
Max speed
2.9 knots
n/a
5.225 knots
6.473 knots
6.298 knots
• Archimede VI
1 person prop
ISR 2013
???
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International Submarine Races # 12 – Team Archimede
3/20
Archimede VI (1/3)
International Submarine Races # 12 – Team Archimede
4/20
Archimede VI (2/3)
• Main innovations
• New infusion-composite hull
• Smaller, less surface/friction drags, faster
• Polycarbonate window
• Polyurethane fins by liquid plastic molding
• Sonar
• Higher construction efficiency
• Low cost processes
• Investments in tools
• Looking for speed !
International Submarine Races # 12 – Team Archimede
5/20
Archimede VI (3/3)
General
Overall Length
Hull max diameter
Inside Volume
Dry weight (including air tank)
131,5 in / 3340 mm
28,5 / 723 mm
20,34 ft3 / 0,576 m3
200 lbs / 90,72 kg
Propulsion
Technology
Propeller optimal speed
Number of blades
Single-propeller
950 rpm
2
Performance
Design speed
7,1 kts / 3,65 m/s
Fins
Profile Reference
NACA0010
Number of fins
4
Reference Area
75,95 in² / 0,049 m²
Gearbox
Design Cadence
Maximum Speed ratio
Steering system
80 rpm
13
Mechanical
International Submarine Races # 12 – Team Archimede
6/20
Past events
• 2 co-events VP
• Communication
• New & updated website (www.polyarchimede.com)
• Use of social media (facebook)
• Past events since ISR 2011
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Montreal Polytechnique visibility and recruiting activities
Montreal Eureka 2012 & 2013 science festival
Montreal Classic Boat Festival
2012 European International Submarine Races in Gosport, UK
(with Archimede V)
International Submarine Races # 12 – Team Archimede
7/20
Budget 2012 - 2013
• Total budget : $ 16,000
• Travelling expenses : $ 6,000
• Scuba diving equipment : $ 5,000
• Power tools : $ 2,000
• Submarine materials : $ 3,000
International Submarine Races # 12 – Team Archimede
8/20
Team members & competition crews
• Archimede members
• Competition crews
• Dry crew
• Preparation
• Divers assistance
• Reparations
• Sub towing
• Wet crew
• Dive leader
• Pilot
• “Balancers”
• Communication with
dive & race supervisors
International Submarine Races # 12 – Team Archimede
9/20
Design – Hydrodynamic (1/3)
• Hull - Hydrodynamic design
• Optimisation from Archimede V
• Based on NACA profile
• Enough volume for systems
• Minimum frontal and hull areas
• Smaller cross section
• Reduced chord line by accentuating the
profile curvature after transmission
• Successive Ansys Fluent analysis
Power necessary to counter
drag [w]
1000
Length
3302 mm / 130 in
Height
723 mm / 28,5 in
• Propeller, shroud and
pre-swirl stators
800
600
• Same from Archimede V
• Better fixation to hull
for changes & repairs
400
200
0
0
2
4
6
Speed [Knot]
8
10
International Submarine Races # 12 – Team Archimede
10/20
Design – Hydrodynamic (2/3)
Hull – Sandwich composite construction
Wax finish
OUTSIDE LAYERS
2 x paint
2 x primer
Putty surface corrections
1 mat fiberglass fabric
1 bidirectional fiberglass fabric
1 mat fiberglass fabric
Corecell with epoxy resin, light weighted
2 coats of mat fiberglass fabric
Epoxy resin paste with glass microspheres
2 x primer
INSIDE LAYERS
International Submarine Races # 12 – Team Archimede
11/20
Design – Hydrodynamic (3/3)
• Hull – Composition
• Sandwich composite : increased bending strength
• Corecell A-foam (closed-cell nautical foam) for buoyancy
• Additional materials to the hull
• Polycarbonate for the window
• Plastic, steel and polyurethane for the fins
• Steel, corecell and epoxy fitting for the rear shaft
• Polycarbonate “pucks” for crewing fixation
• Hull – fabrication
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Counter-mold (plug)
Mold
2 x infusion hull halves with vacuum
Assembly of the halves with 2 additional vacuum infusions
International Submarine Races # 12 – Team Archimede
12/20
Design – Fins (1/2)
• Fins – design
• Removable 2 sets of fins
• A – Control designed
• B – Speed designed
International Submarine Races # 12 – Team Archimede
13/20
Design – Fins (2/2)
• Fins – fabrication
• Model -> Silicone rubber mold -> Polyurethane parts
• Stronger top fin vs 3 other fins (less fragile)
• 2-3 hours to get a new fin from scratch !
• Huge advantages over “traditional” composite fins
• Faster
• Cheaper
• Higher surface quality
International Submarine Races # 12 – Team Archimede
14/20
Design – Mechanical (1/2)
• Direction
• One hand pilot control
• Bike cables tightly linked to the fins
• Better precision
• Remember Archimede 5…
loosely cables on big pulleys !
• Referencing system – during construction
• Laser
• Precise positions of inner systems
• Referencing system – in competition
• Visual control through 360 window
• Sonar aid
International Submarine Races # 12 – Team Archimede
15/20
Design – Mechanical (2/2)
• Drivetrain
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Removable cassette
New cassette holder
New first stage shaft
Same ratio as Archimede V
• Pop-up buoy and propeller nozzle
International Submarine Races # 12 – Team Archimede
16/20
Design – Mechanical (2/2)
International Submarine Races # 12 – Team Archimede
17/20
Conclusion
Sorry for the presentation
delay yesterday…
We had some issues:
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Pilot not coming due to medical surgery
Dive master burn out
VP-logistic cancelled 10 min before departure
2 other members cancellation in the past two weeks
And last but not least…
• Team leader in civil engineering!
International Submarine Races # 12 – Team Archimede
18/20
Conclusion
So…
We continued our work on evenings at the hotel
in order to finish the submarine !
International Submarine Races # 12 – Team Archimede
19/20
Any questions ?