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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


• 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


• Restraint System

• Life Support Systems

• Safety Features

Hull FabricationLathing

• Male plug• Foam block– 50” x 30” x 120”– 4 lb/ft3

• Custom built lathe


Hull FabricationFiberglass Layup


• 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


PropulsionDrive Train


• 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


PropulsionPropeller Hub


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”


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


Control System• 3 Degrees of control– Pitch – Yaw– Roll

• Steering column• Control mechanism• 4 control surfaces


Pilot Restraint System

• Shoulder Restraint– 3 degrees adjustable

• Lap Belt


Pilot Life Support System

• 60 ft3 SCUBA Tank• 8 ft3 Spare Air


Safety Features

• Submarine Safety Markings– Hatches– Control Surfaces– Control Surface Guard– Propeller

• Strobe Light• Emergency Buoy


Safety FeaturesStrobe and Emergency Buoy

• Strobe Light– Visible 360°

• Emergency Buoy– Alerts crew to injured

pilot


TestingOffshore Technology Research Center (OTRC)

Located in Research Park on Texas A&M Campus


Training

• Pilot training– Emergency Egress

• Assisted • Unassisted

– Piloting

• Crew training– Pilot Rescue

• Unconscious• Conscious

– Launch – Recovery


Budget

• Cash Donations = $8000• In kind donations ~$30,000 – Kevlar– Resin & Hardener– Nose cone– Driveshaft, Propeller hub, Bearing


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
