TEAM 6: JAWSSTEAM 6: JAWSSA Design Project Presentation

Team 6 members:

Louise McGowan

Ken Millard

Daniel Rice

Kevin PearceJoint-service Active Watch Joint-service Active Watch Surveillance SubmersibleSurveillance Submersible

“JAWSS HAS BITE”

OVERVIEWOVERVIEW

• What is JAWSS?• Features of the Design• Testing, Trials & Tribulations• Future Improvements • Budget• Closing Remarks• Questions

What is JAWSS?What is JAWSS?

Current SubCurrent SubJAWSS 2:• Highly Visible Hull• Sturdy Aluminum

Frame• Remote Operation• Colour Video• Four Thrusters• Water Resistant

Comparison to ObjectivesComparison to Objectives

CRITERIA DESIRED ACHEIVEDHorizontal Speed 1 knot ~0.3 knot

Vertical Speed 0.1 knot ~0.16 knot

Turning Radius 3ft 3ft

DOF 3 4

Depth 10ft 19ft

Weight 30 lbs 13.8 lbs

Visibility 2ft >5ft

Water Integrity Yes ~Yes

Stability Yes Yes

Tow Tank TestsTow Tank Tests

• Water Integrity• Buoyancy • Drag• More Water Integrity• Camera• Maneuverability • Inspection

Tow Tank Results - GoodTow Tank Results - Good

• Found True Drag

• Verified Required Ballast

• Controls and Camera Work

• Passed Inspection

• Leak Light Works!

Tow Tank Results - BadTow Tank Results - Bad

• Gaskets

• Thrusters

• End Cap Seal

• Tether Connectors

• Dome!

Tow Tank SolutionsTow Tank Solutions

• Modified Horizontal Thrusters

• Sealed End Cap and Thrusters

• Achieved Desired Buoyancy

• New Tether Connectors

• Replaced Dome – New Seal

HMCS ATHABASKAN TestHMCS ATHABASKAN Test

HMCS ATHABASKAN Results - GoodHMCS ATHABASKAN Results - Good

• Proved Test Depth of 10 ft

• Conducted Hull Inspection

• All Warning Lights Work

• Confirmed Visibility in Harbour Water

HMCS ATHABASKAN Results - BadHMCS ATHABASKAN Results - Bad

• 19ft failure (2 x design)

• Water on the inside

• Team 6 mourns their loss

HMCS ATHABASKAN HMCS ATHABASKAN SolutionsSolutions

JAWSS 2:

• Externally Mounted Thrusters

• Epoxyed Previous Mounting Holes

• Cleaned Electronics

DalPlex TestDalPlex Test

DalPlex Results - GoodDalPlex Results - Good

• It’s Alive!!!• Proved Concept• Ease of Use• Maneuverability Tests• Speed Tests

DalPlex Results - BadDalPlex Results - Bad

• Still Small Leak – Bad Data Plug

• Thrusters Not Enclosed

• Tether Impedes Motion

Lessons LearnedLessons Learned• DOME: Machining acrylic creates micro-

fractures purchase a dome that requires no machining/modification.

• PACKAGING: Some packaging does not clearly indicated all properties of a marine sealant find larger contained and read all warnings.

http://www.sikaindustry.com/

Lessons LearnedLessons Learned• SHIPPING: Just because you pay for

overnight delivery does not mean you’ll get overnight delivery Use pack mules.

• SEALS: Using machine bolts in PVC does not allow enough force to compress gasket Use alternative seals

http://www.exzooberance.com/

If We Had to Do It Again…If We Had to Do It Again…

• Next generation electronics

• External thrusters

• Improved seals

• Hull clamped to frame

• Neutrally buoyant tether

• Bigger motors

BUDGETBUDGETTOTAL COST  

Action Total

Main Hull Construction 228.65

Thrust Unit Construction (4) 270.00

Controls & Imaging System Construction 660.00

Circuit Boards 300.00

Power and Tether Construction 150.00

Protective Cage Construction 165.39

Power and Tether Construction 150.00

Connectors, Fittings, Wire 185.00

Excess Material Purchase 250.00

Additional Supplies 150.00

Admin/Logistics Costs 100.00

2609.04

Tax 443.54

TOTAL 3052.58

TOTAL RECOVERY  

Action Total

Financial Donation (Dalhousie) 400.00

Borrowed Equipment 175.00

DIGI-Key Donation 500.00

AP Circuits Donation 300.00

Member Contributions 1677.58

TOTAL 3052.58

BUDGETBUDGETTOTAL COST  

Action Total

Main Hull Construction 138.65

Thrust Unit Construction (4) 108.99

Controls & Imaging System Construction 660.00

Circuit Boards 300.00

Power and Tether Construction 125.99

Protective Cage Construction 165.39

1499.02

Tax 254.83

TOTAL 1753.85

The Last WordThe Last Word

• Many setbacks

• Learned a lot

• Low cost submersible achieved

• Use O-rings to seal data plug leakage

• It’s never too late to try again:

JAWSS 1 = 6 monthsJAWSS 2 = 36 hrs

BIG THANKS TO ALLBIG THANKS TO ALL Sponsors: Alberta Alberta

Printed Printed CircuitsCircuits

Delphinus Marine TechnologiesDelphinus Marine TechnologiesAncaster, ON, CanadaAncaster, ON, Canada

  

DRDC AtlanticDRDC Atlantic

HMCS ATHABASKANHMCS ATHABASKAN

BIG THANKS TO ALLBIG THANKS TO ALL Techs: Angus Macpherson, Greg Jollimore, Albert Murphy

Profs: Anastasis Vyron Georgiades Mae Seto Ted Hubbard

Others: Winston Churchill:

“Never, never, never, never give up. ”

¿Questions ?¿Questions ?

JAWSS 3

Shark Fishing