the project the organization the submarine – safety requirements – hull – fins – drivetrain...

Team ArchimedeÉcole 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

2

• Desing a freefloating vehicule that fully encapsulates the racer

• Direct propulsion• Provide safety and lifesupport systems• Unpressurized vehicule• One person submarine propeller driving

3

• 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

4

• 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

5

• Pop-up buoy– Reel cable– Pneumatic dead man switch easily

reachable

• Bright orange stickers and lines• White flash strobe light• Secondary air supply

6

• 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– Wet lay-up– Counter-mold (plug)– Mold– Two halves hull joined by additionnal corecell

7

8

• Theoritical aspect– Drag– Profile– Lift forces

• NACA 0010

9

• Design with Catia V5

Fixed part Mobile part Fin shaft

10

• Fin thickness reduced

• Injection technique with bidirectionnal carbon fiber

• Fixed and mobile parts to reduce stress and induced drag

11

• CFD simulation (pathline flow)• Convergence analysis• FEA and optimization Analysis

12

• Results

Velocity vectors of water flow around

the fins

13

• Carbon fiber injection– Halves molded and joined with eposy resin

composite

14

• Adjustable to fit differents pilots

• Provide an easy way to adjust the gear ratio

• Stronger and more reliable than previous propulsion systems

15

Provides 8” of

adjustments

16

• Three stage transmission– Bicycle transmission– Two helicoidal gear sets (vibration purpose)

• The bicycle transmission provides adjustment of the gear ratio

17

• Ergonomy study for space• Verify the ability to operate the

propulsion system

18

• Forces analysis on the hull to verify the rigidity of the hull under stress

19

• 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

20

• 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

21

• 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

22

• 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

23

• 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

24

• Custom PCB– Designed with Eagle software– Assembler and C language programming

• Waterproof Box

25

• 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

26

• University pool– Balance– Communication

• 75 % divers

• Better run yesterday than overall performances 2 years ago

27

• Summary• Main innovations– Composites– Adjustable drivetrain– Fins

28

29