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Maroon HarpoonMaroon HarpoonTexas A&M UniversityTexas A&M University
Ocean Engineering DepartmentOcean Engineering Department
TAMU Human Powered Submarine 2009 1
Crew Members
• Alyssa Baker• Duncan Brotzman• Chris Dearing• Sean Finn• Casey Hodges (Team Leader)
• Alex Knoll• James Lightfoot
• Abel Melledin• David Neat• Jeff Phillips• Chris Ryan• Robert Sanchez• Sarah Schlosser (Team Leader)
• Cynthia Vittone
Faculty Advisor: Dr. Robert E. RandallTAMU Human Powered Submarine 2009 2
Overview & Goals• Design Speed – 7 knots– Achieved 5.022 knots at ISR 9– Goal for ISR 10 – 6 knots
• Improve drive train and propulsion system
• Add instruments to gather shaft RPM and torque data
• Develop team and leadership skillsTAMU Human Powered Submarine 2009 3
Design Philosophy
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• Achieve higher speeds than any TAMU submarine team in the past
• Reduce drag yet still accommodate a pilot of up to 5’ 10”
• Gain valuable team building experience• Have fun at ISR 10
Design and Fabrication
• Hull Fabrication
• Propulsion System
• Instruments
• Control System
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• Restraint System
• Life Support Systems
• Safety Features
Hull FabricationLathing
• Male plug• Foam block– 50” x 30” x 120”– 4 lb/ft3
• Custom built lathe
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Hull FabricationFiberglass Layup
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• Sandwich construction– 3 layers Kevlar with
Epoxy Resin– Closed cell syntactic
foam– 2 layers Kevlar with
Epoxy Resin
Hull FabricationFiberglass Layup
• Vacuum bag technique– Wrap plug with release
material– 2 layers cure– Syntactic foam– Apply filler– Apply 3 layers
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PropulsionDrive Train
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• Cyclical gear box– 3:1 and 4:1 ratios
• Direct drive• Brand new drive shaft
PropulsionRear Bearing
• Secured by tightening against hull
• 2 glass bearings– No corrosion– No grease required
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PropulsionPropeller Hub
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Nylon Knob
Propeller Attachments
Follower
Worm Gear
Shaft
Angled Grooves
PropulsionPropeller
• Twin knife blade propeller
• 2 sets of carbon fiber propellers– 12”– 10.75”
• 1 set of stainless steel propellers– 9.5”
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Instruments• Measure torque– Torque sensor
• Measure RPM– Accelerometer– Hall effect sensor
• Electronics Housing– Houses circuit board– Hall effect sensor– Accelerometer
• Data stored on SD card
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Control System• 3 Degrees of control– Pitch – Yaw– Roll
• Steering column• Control mechanism• 4 control surfaces
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Pilot Restraint System
• Shoulder Restraint– 3 degrees adjustable
• Lap Belt
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Safety Features
• Submarine Safety Markings– Hatches– Control Surfaces– Control Surface Guard– Propeller
• Strobe Light• Emergency Buoy
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Safety FeaturesStrobe and Emergency Buoy
• Strobe Light– Visible 360°
• Emergency Buoy– Alerts crew to injured
pilot
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TestingOffshore Technology Research Center (OTRC)
Located in Research Park on Texas A&M Campus
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Training
• Pilot training– Emergency Egress
• Assisted • Unassisted
– Piloting
• Crew training– Pilot Rescue
• Unconscious• Conscious
– Launch – Recovery
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Budget
• Cash Donations = $8000• In kind donations ~$30,000 – Kevlar– Resin & Hardener– Nose cone– Driveshaft, Propeller hub, Bearing
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Sponsorship• Oceaneering
Intervention Engineering• Offshore Technology
Research Center (OTRC)• Ocean Engineering
Division• Zachry Department of
Civil Engineering• Paradise Scuba
• MTS (Houston Section)• SNAME (Texas Section)• Diab Group• DUNA USA Inc.• Trepan Tools• Texstars Inc.• Baumann Propellers• Penske• Montgomery
Monograms
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