Final Presentation Crew: Mike Lanteigne Wallace Barkhouse Scott Donahoe Blair MacKay Captain: Dr. Jimmy Chuang April 4 th 2012

Outline Criteria and Constraints Changes to Preliminary Design Building/Challenges Final Design Testing Performance Improvements

CriteriaConstraints Will float, is safe and sturdyOperate in sea state 3 Has a steering mechanismWithstand 20 knot wind Mechanical system to raise and lower mast Able to fit on standard car rack or pick up Withstand 20 knot windMast smaller then 3 meters Buoyant when flippedMaterial corrosion resistant

Preliminary Design Aluminum Components Mounting Mast Bracket Internally Mounted Keel Rear Mounted Rudder Curved Sail Pontoon System

Design Changes ItemChange Mast Bracket Size was increased Reduced stress on kayak Pontoon Supports Box tubing was used Switched to pin setup Pontoons Box tubing embedded in fiberglass Keel Used side mounted keel Bolted directly to kayak Rudder Homemade rudder vs. store- bought Sail Boom was added Increased control

Mast Bracket Preliminary DesignFinal Design Enlarged mast plate Incorporates forward pontoon support tubing Angle aluminum welded directly to plate 10 in 15 in 10 in

Pontoon Supports Preliminary Design Straight lengths of box tubing used Run through larger box tubing sections mounted on kayak Entire assembly can be pinned together Final Design 10 feet

Pontoons Final Design The pontoon design did not change Pontoons are six feet long Box tubing fiber glassed into pontoons Fits together with pins 6 feet

Keel Preliminary DesignFinal Design Bolts directly to existing mounts No chance of leaks Does not impede users legs

Rudder Preliminary Design Final Design Hands free operation Uses existing hardware for mounting Good range of motion Can be raised and lowered To Foot Pedals Side View Top View

Sail Design More sail control Made from abs plastic, lightweight and strong Well above the operators head for safe operation Is easily removable from mast. Previous DesignFinal Design No boom 50 inches

Final Design Hinging mast bracket Box tubing supports Side mounted keel Oversized pontoons Removable boom Rear mounted rudder

Building Outline PartGroupTechnicians Mast Bracket Supports Keel and Rudder Sail / Boom Pontoons

Sea Kayak 16 feet long Handle modifications Level Structural Putty Wood Core Molds 16 feet Rear Support Plate Front Mast Plate Pins

Mast Bracket Welded by tech Finished by group Lowering Raised Rear Support PlateFront Mast Plate Remove Pin Pivot Pin

Supports 1o foot box tubing Pin holes at ends and middle KeelRudder Pin Holes

Keel and Rudder Keel Plywood construction Fiber glassed for water proofing ` Rudder Aluminum assembly Pin holes at ends and middle Pivot Point for Steering Pivot Point for low water

Sail Custom made 4 x 8 feet Collar PVC “T” Boom ABS pipe Friction fits

Pontoons Foam core 3 layers matting Attachments fiber glassed into pontoons

Final Design Challenges Leveling kayak hull Fiber glassing pontoons

Testing Outline TestObjectiveResult Assembly Can fit in car Easily assembled Raise/Lower Mast Mechanical mechanism One person operation Wave Withstand Sea-State three Waves.5 – 1.5m Wind Withstand 20-knot winds ? Buoyancy Buoyant when filled with water Buoyant when flipped

Assembly Test 1 min 2 min 3 min 4 min 5 min Time Elapsed:

Raising / Lowering Mast

Wave Test Avg. Wave Height = 0.75 m Wave Direction:

Wind Test Design must operate in 20 knot winds Design competently handled 12 knot winds Team is confident that vessel could handle 20+ knot wind speeds Wind Direction:

Buoyancy Test

Performance Max Wind Speed = 12 knots Max Vessel Speed = 5.2 knots

Performance

Improvements Lighter material and construction for pontoons Increase spacing between pontoon supports Design hull to accommodate mast

Conclusions Design worked as expected Building was a challenge Design could be improved Mass added = 105 lbs Increase in draft = 1.4”

Budget

Thanks Shell Fiberglass Marine Supply Halifax Yacht Shop Dr. Jimmy Chuang Rob Warner Dr. Julio Militzer Technicians Albert, Mark and Angus Albert’s friend Bill for helping with testing and safety