UCSD Human Powered Submarine Team – Odin’S Rage 2009

UCSD Human Powered UCSD Human Powered Submarine Team – Odin’S RageSubmarine Team – Odin’S Rage

20092009

Team HistoryTeam History

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

Unique non-propeller driven design. Utilized a “dolphin tail” motion

Project ManagementProject Management

Team Plan– Use Brand New Hull– Divide the project into

parts and create responsible groups• Drive Train• Steering• Fin

Hull Hull

5 layers of fiberglass Cured with “Sun-rez”

UV cured resin Acrylic windows

Additional 2 layers around belt for strength

Knee and Heel blisters to reduce volume

Drive Train DesignDrive Train Design

Using SolidWorks Cad Software helped us design for simple manufacturability.

Using a bike-chain drive, it moves a piston rod to translate rotational motion to lateral motion

3:1 Gear Ratio gives us the needed mechanical advantage

Drive Train ConstructionDrive Train Construction

99% of all materials used are either aluminum, stainless steel, or plastic for corrosion resistance.

By modifying store bought bicycle parts we kept fabrication simple.

The lightened aluminum boom is hollowed out to reduce weight but not sacrifice strength

Fin DesignFin Design Instead of adapting

theoretical biometric fins (fish, dolphin, etc.), use a symmetric airfoil to calculate thrust

The boom sweeps 90° and the fin is free to rotate 90° relative to the boom, which provides great lift and little drag.

Combining high sweeps per minute with a large surface area wing of high aspect ratio gives the best theoretical performance.

Fin ConstructionFin Construction

A CAD model from SolidWorks was machined using an automated milling machine (CNC technology)– Ensuring symmetry

Layered with Fiberglass

Fitted with sweep-limiting knuckle.

SteeringSteering

Surfboard fins Morse Cables Simple actuation Strong materials Epoxied Shaft Wide range of motion Large Surface area Avoid Walls!

ControlsControls

Mounting all controls, mechanically, to a single handle– Removes electrical problems– Frees other hand as solid

support base. Hydraulic actuators have

been replaced with Morse push-pull flexible cables for corrosion resistance and ease of operation and maintenance

Safety FeaturesSafety Features

Quick release hatch - just pull!

No need for pilot restraint Spare air in case the

pilot’s main air supply fails Clearly-marked safety

features for support divers Pop-up buoy attached to

dead-man’s switch

Future GoalsFuture Goals

Perfect current systems

Minimize drag and maximize power output for faster speed

Computer controlled variable pitch adjustment

Lessons LearnedLessons Learned

Press-fits are not truly secure!

Gather Sponsors before academic year

Early training K.I.S.S.

SponsorsSponsors

US Grants