SUBC

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Who We Are

• SUBC is a group of undergraduate engineering
  students from the University of British Columbia
• Team Goals
• Design , build and test a human powered, flooded
  submarine
• Promote UBC and UBC student teams
• Race at the 11th International Submarine Race in
  Bethesda Maryland

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Design Philosophy

• A Low key environment, with members who are there
  to learn and build, while having fun
• Keep as much design and manufacturing in house as
  possible
• Have reasoning behind every design decision

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How to get there
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Project Phases

• There are 4 key phases to the project
• Preliminary Preparations
• Goal setting, Fundraising, Certification
• Design
• NACA Aerofoil, Wind tunnels, Modeling
• Manufacture
• Fiber-glass lay-up, system manufacturing,
  Aesthetics, Safety, Ergonomics
• Execution
• Planning for race day, Pilot preparation,
  Organization and communication

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Gearbox

• The gearbox was inherited from a previous
  Capstone Design Project
• Bushings were chosen for their corrosion
  resistance
• Gear set-up enables counter-rotating propellers

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Hull Design

• 2D Approximations
• NACA data
• 3D CFD Analysis
• RANS simulations of 5 submarine hulls

Residuals
Force Plot
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Hull Design

• CFD Done At STX Marine
• Four designs were tested
• Rotated Cross section of NACA 6 series Foils

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Hull Manufacturing
-Perform an analysis of pro/cons of each
method -Assign a weighted value to each
pro/con -Decide on a process using weighted
decision matrix, past team advice
industry -Optimize!! -Begin manufacturing
-Kevlar/Carbon Body with Ribs and stiffeners -2
piece design
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Fin Design

• Building on
• airfoil research
• Submarine control research
• Low Aspect Ratio wing/fin research
• CFD analysis, in cooperation with
• CD-Adapco

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Fins Used

• Windsurfing fins modified for submarine use
• Impact resistant Plastic
• Fit with our teams time constraints
• Initial sizing estimates used for fin sizing

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Ergonomics and Life Support

• Optimizing the human factor
• Getting the most power
• out of our pilot as possible
• Ensuring pilot and diver
• safety

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Safety Requirements
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Ergonomics

• Area around pilot
• Hatch egresses
• Handlebars/ steering

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Testing

• Two Separate Pool times
• Effective for learning what worked and what
  didnt
• Had free movement at end of second session

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Budget

• Kept costs low through in kind sponsorship and in
  house manufacturing
• Use resources effectively

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The Complete Submarine

• Systems that work together
• Safe and effective
• Redundancy
• Speed

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Questions

• Thanks to Our Sponsors
• Visit us at blogs.ubc.ca/subc/
• or
• Drop by here at ISR 11!