fau ocean engineering
DESCRIPTION
FAU Ocean Engineering. TALON 1. Abstract. Over the past few years, the FAU Human Powered Submarine Club has been working to improve their one-man sub, Talon 1 . Through continually refining and improving Talon 1 , it has remained to be a strong contender for multiple ISR competitions. - PowerPoint PPT PresentationTRANSCRIPT
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TALON 1
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AbstractOver the past few years, the FAU Human
Powered Submarine Club has been working to improve their one-man sub, Talon 1.
Through continually refining and improving Talon 1, it has remained to be a strong contender for multiple ISR competitions.
The mission of this project was to create a human powered submarine that achieves maximum speed in a short time over a straight distance.
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IntroductionThe FAU’s Human Powered Submarine Club
was founded in 1989, and through the years has competed in nearly all of the International Submarine Races.
At the 11th ISR, Talon 1 received 4 awards:Absolute SpeedFastest in PropellerSmooth Operators2nd Overall
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Hull DesignElongated
Gerler shape10 ft long, 25.75
in tall, 21 in wide
Figure 2: CFD Modeling 3D View (Above) CFD Modeling Top View (Below)
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Main HatchLocation chosen based on CFD modelingAccommodates most materials and diversReinforced to withstand pressure
differential3 spring loaded latches
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Service and Dead Man Buoy HatchesLocated on the aft of the hull
Used Bernoulli’s equation:58 lbs force on rear service panel32 lbs force on dead-man hatch
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FairingsLocated on top, bottom, port
and starboard surfaces
Major source of drag
Made with 2-part female moldEasy Flo 60 Liquid Plastic1/2” threaded aluminum bars
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Windows
4.96 ft2 of acrylic windows5 in band for aft visibilityNosecone for forward visibility8 x 7 in window for downward visibility
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Hull FabricationPrefabricated sections from
AUV
Fusion of 4 sections
Total weight 150 lbs
Figure 8: Hull Fabrication Reference
Figure 9: Hull Fabrication. Pre-fabricated hull from AUV was originally yellow
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Static Trim and StabilityWithout foam, sub is 80 lbs negativeAddition of 1.75 lb/ft3 of extruded polystyrene
foam provides for neutral buoyancy
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Propeller TorqueProduces a maximum
feedback torque of 18.3 Nm
Designed to have a heavy side and buoyant side to counteract torque
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Propulsion SystemStandard bike configuration with the addition
of a sealed gearbox154 mm crank arms and twin blade propellerTesting of pilots revealed the a speed of 120-
156 rpm, with a lowest expected speed of 5 knots
Egg-beater style pedals allow pilot to push and pull on pedals
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GearboxRecycled from the FAU-boatConstructed from aluminum block1:3 steel ground spiral bevel and pinion gear
system powers the shaft connected to the propeller
Propeller is a long two bladed propResembles airplane propLack of skew
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Control SystemsDesigned to minimize separation and flow
disturbanceFlat leading edge7 degree rake
Fins positioned at the edge of the sub’s boundary layer and outside of prop radius
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JoystickFins are controlled by 2
axis joystickJoystick is connected to
fins by Teleflex cablesCables can push and pull
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Design AspectsDesigned to be easily manufactured,
assembled, transported, and repairedMost manufacturing was completed on FAU
Boca Raton campusLocal sponsors helped for more complex or
specialized tasks
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Assembly and TransportIt takes 6 man hours to completely assemble
and prepare the submarineAll systems are attached to the hullVelcro strips allow for easily removable foamTransported on composite cartPropeller easily removed and stored during
transport
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ReproducibilityUsed common materialsNosecone made of
polycarbonateSystems mounted with
large easily removable brackets to allow for repair or modification
Gearbox quickly disassembles
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Safety3 ft3 pony bottle strapped to pilot
in case of emergency“Dead-man” handle on joystick
releases buoyQuick releases on the restraint
strapsBright orange paint on fins and
propellerStrobe light
Figure 20:Steering joystick with dead man handle in use
Figure 19: Hatch and Buoy
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ErgonomicsRedesigned 80 ft3 tank placed directly under
the pilotGearbox moved to allow for taller pilotsAdjustable restraint strapsAir supply gauge located in front of pilotDive computer and compass help to keep
pilot on course especially for beach test runs
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ConclusionTalon 1 has evolved through several
generations of club membersDesign modifications have kept it a major
contender through multiple competitionsIt has been an invaluable source to learn
many skill sets and a lot of fun!