UCSD Human Powered Submarine

Team Stanley2009

Team History

• 6 previous Submarines

• Brother Submarine: Odin’s Rage

• Team:

– Faculty

– Non-Faculty

– Undergraduates

1999 – 2000: “Subsonic” Set new world record speed of 3.47 knots

New unique non-propeller driven design. Utilizes an “underwater rowboat” motion

Project Management• Stanley Plan

– Design and Fabricate within 1 years time

– Divide the project into 3 constituent parts

• Drive Train/Propulsion• Hull• Pool Testing/Computational

Modeling

Drive Train Design

• Simple and Effective– Leveraged linear slide system– Historically established propulsion

methodology • “Drebel”

• Linkage system harnesses pilot’s quadriceps and gluteus maximus in unison.

• 60 degree Power Stroke

• Feathered paddles allow for minimal losses during the return stroke.

Drive Train Construction

• Unique binding system for pilot’s.

• Adaptive paddle mount system allows for propulsive improvement

• The break away oars/paddles makes transportation easier as well as creates less of a risk for damage.

Hull• Ready made solution

• Classically streamlined body

• Secondary sections – Special order acyclic nose

cone– Hand rolled aluminum tail cone

Pool Testing

• Purpose of pool test – Establish hull strength– Find

• Center of pressure• Center of gravity

– Pilot ergonomics– Subs water weight

Computational Modeling • Solving the governing equations

of Fluid Dynamics for a complex flow is difficult.– Approximate dominant propulsion

dynamics– Matlab Simulation

• Momentum transfer– Paddles displace water mass– Water mass travels rearward at

average velocity– Average velocity of water mass can be

calculated by accounting for forces • Drives trains inertia• Paddle and oar drag forces • Paddle and oar bending due to drag forces

• Assumptions– Average Human Power Output

• 224 Watts for short term (5-10 min’s) bursts• Turbulent flow

Estimated top speed3.4857 Knots

Safety Features

• Quick release hatch - just pull!

• Simple two-step pilots foot binding release

• Spare airs in case the pilot’s main air supply fails

• Clearly-marked safety features for support divers

• Warning markings on moving boom and paddles

Future Goals• Lift based

propulsion• Sophisticated

emergency float• Minimize drag from

hull and propulsion• Computer controlled

guidance system

Lessons Learned

• Matlab simulation• Materials science• Fluid mechanics• Industrial engineering

• Professionalism

Sponsors

US Grants