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