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Published byQuentin Casey Modified over 9 years ago
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University of Washington Human Powered Submarine Systems Report
Michael Thompson-Team Captain Brian Matters-Dive Captain
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Contents Introduction Submarine class Propeller design
Power transmission system Life support Safety systems Hull evaluation Design summary
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Team Introduction University of Washington Human Powered Submarine Team Michael Thompson, Captain Brian Matters, Co-Captain & Diving Coordinator Design Teams Propulsion Submarine Systems Hull Design
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Submarine Class
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Propeller Design Goals and Assumptions Single screw Optimize thrust
Design for specific power requirement Design parameters based on research over intuition Design for ease of manufactuing
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Propeller Research Importance Propeller Dynamometer Pilot Ergometer
Previous propeller design was based solely on intuition Specific revolution rates and power ranges were needed A way to evaluation propeller designs Propeller Dynamometer Pilot Ergometer
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Propeller Dynamometer
Test scale model propellers Provide physical data Compare and evaluate computer models
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Pilot Ergometer Better understand the human ‘engine’
Determine power output and rpm ranges Optimize pilot ergonomics
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Propeller Selection Airfoil shapes researched
Ergonomic data used to constrain design Propeller design evaluated using CFD and tested on Propeller Dynamometer
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Power Transmission Design challenges Goals
Previous system had extensive backlash and prone to gear slip Bearings degraded when exposed to water Goals Reduce bearing friction Properly design gear interface Allow for transmission to be easily removable
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Gearbox Design Sealed gearbox to eliminate fluid drag
Enclosed shaft and supports One piece design
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Life Support SCUBA component evaluation Tanks size requirements
Air consumption rates Airway & breathing restriction Tanks size requirements Staging and run times Breathing rates Regulator selection Pilot comfort
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Primary Life Support System
Tank AL-40 Enough air for five runs Regulator Ocean Reef G-diver Full use of airway
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Emergency Air Supply Design factors Tank Regulator Independent system
Removable in event of emergency accent Tank Al 13 pony Regulator Aqua Lung Titan LX
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Safety Systems Submarine paint scheme Emergency egress
Diver restraints Pilot visibility Emergency beacon Emergency buoy
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Paint Scheme
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Egress and Restraints Egress was made to be as simple as possible
Pneumatic cylinders activate hatch release Hatch release deployed with activation of dead-man’s switch Pilot is no longer actively restrained in the submarine
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Emergency Beacon and Buoy
Beacon system Beacon is attached to top of hull for maximum visibility Buoy design Buoy system is self contained to ensure line doesn’t tangle Buoy is spring loaded and deploys with retractable pneumatic cylinder
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Hull Design Design focus Existing hulls
Design and manufacture new hull Renovate existing hull Existing hulls Dubsub: sleek but cramped Sirius: extra real-estate but large cross-sectional area CFD analysis
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Hull Selection Team race goals Formally Dubsub Optimize for speed
Research automated controls Limited manpower Formally Dubsub Internal frame structure Modular design
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Hull Layout
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Summary Team goals Further research into Marine Engineering
Increase public interest in Undersea Research Apply education through real world application Encourage younger students to pursue science as it relates to the marine industry Reflect well upon the University of Washington and strengthen the team structure for the future
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Questions?
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