April 1, 2014 Client: Dr. Michael Hinchey Group Name: LifeSub Engineering Group Number:M14 Group...
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Transcript of April 1, 2014 Client: Dr. Michael Hinchey Group Name: LifeSub Engineering Group Number:M14 Group...
Submarine Evacuation System for Offshore Structures
April 1, 2014
Client: Dr. Michael Hinchey
Group Name:LifeSub Engineering
Group Number: M14
Group Members:
Ajanthan Asokan
William Barkhouse
Matthew Browne
Stephen Handrigan
2
AgendaProblem StatementProject OverviewDeployment StrategiesPrototype DesignManufacturingCommissioningConclusionFuture Work &
RecommendationsQuestions
April 1, 2014
3
Problem Statement
Develop a prototype and deployment strategies to
prove an autonomous submersible could be used
as an evacuation method for offshore structures.
February 4, 2014
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Project Overview
April 1, 2014
Current ProblemLifeboats – Exposed to HazardsFreefall – Uncontrolled
Proposed SolutionDeployable Submarine
Project GoalsDevelop and Test Automated
Submarine PrototypeDevelop and Test Deployment
OptionsIdentify Design Requirements
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Control Sequence
April 1, 2014
+ θ
- θ
+ Φ
- Φ
Z2
Z1
+ Z
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Deployment Strategies
April 1, 2014
1. Vertical Deployment Propeller-down launch Underwater Avoid GBS interference
2. Horizontal Launch Release bay filled with
water Exit from enclosed
piping
3. Horizontal Docking Connect with GBS
1.
2.
3.
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Prototype Design Evolution
April 1, 2014
Phase 3Propeller Shroud
with Streamline Hub
Piston Ballast Pumps
Internal Support Mounts
Stepper Motor Sleds
Phase 1
Phase 3
Phase 2
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Prototype Design
April 1, 2014
Ring guide and shroud Protect hull Allow air and water passage
around sub during deployment
Shroud Protects thruster from
being damaged Streamlined hub reduces
eddy currentsLifting Hook allows for the
lifting of prototypeCenter-axis mounted
thruster with F/R controlPiston Pumps
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Prototype Design: Internal Mounting
April 1, 2014
2 Ballast Pump Mounts
2 Ballast Pumps2 Support Rings3 Batteries1 Circuit Board2 Stepper Motors4 ¼”-20 Threaded
Rod
Prototype
¼ "-20 Hex Nuts
¼" -20 Threaded Rod
SolidWorks Model
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Prototype ManufacturingBallast Chamber
25mm diameter piston pump
40mm vertical piston travel
Driven by stepper motor via rack in pinion
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Prototype Design: Ballast System
April 1, 2014
Internal Piston Setup
Stepper Motor & Sled
Rod Support Mounts
Rack &Pinion (32 - 3/16”)
Piston Ballast Pump
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Pseudo-wiring Diagram
April 1, 2014
PIC
MOSFETS
Batteries
ThrusterClamp
Signals 1-6
VIN
GND
Stepper Motor
* **
Stepper Motor
Circuit
Piston
Signals 1-6
Pressure Sensor, Accelerometer, etc.
** +5 V
* GNDRS-232 DE-9 Female Pinout
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Prototype Manufacturing
HullExtruded ABS
Pipe provided by EMCO
Completed by Tech Services
Ring Guide/ShroudRP ABS
PlasticCompleted by
MTC
Piston PumpsFabricated
from recycled piston shocks
Completed by Tech Services
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Commissioning
April 1, 2014
Water Control TestsWater Tight HullPre-ballast and
leveling
Dry Control TestsStepper Motor TestThruster TestSensor TestDynamic Balancing
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ConclusionDeveloped an automated submersible prototype with active Pitch,
Depth, and Thrust control
Developed commissioning procedures to verify operability of
prototype
Developed test procedures to simulate emergency evacuation of
offshore structures
Developed the codes required to perform testing with the prototype
April 1, 2014
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Recommendations and Future Work
April 1, 2014
Complete commissioning of active systemsDepthPitchThrust
Complete deployment testsAnalyze motionMake recommendations for
viability of full-scale implementation
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Questions?
April 1, 2014
Thank-youwww.lifesubengineering.weebly.com