1. University of Washington Human Powered Submarine Systems Report
Michael Thompson-Team Captain
Brian Matters-Dive Captain

2. Contents Introduction Submarine class Propeller design
Power transmission system
Life support
Safety systems
Hull evaluation
Design summary

3. 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

4. Submarine Class

5. 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

6. 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

7. Propeller Dynamometer
Test scale model propellers
Provide physical data
Compare and evaluate computer models

8. Pilot Ergometer Better understand the human ‘engine’
Determine power output and rpm ranges
Optimize pilot ergonomics

9. Propeller Selection Airfoil shapes researched
Ergonomic data used to constrain design
Propeller design evaluated using CFD and tested on Propeller Dynamometer

10. 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

11. Gearbox Design Sealed gearbox to eliminate fluid drag
Enclosed shaft and supports
One piece design

12. 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

13. Primary Life Support System
Tank
AL-40
Enough air for five runs
Regulator
Ocean Reef G-diver
Full use of airway

14. Emergency Air Supply Design factors Tank Regulator Independent system
Removable in event of emergency accent
Tank
Al 13 pony
Regulator
Aqua Lung Titan LX

15. Safety Systems Submarine paint scheme Emergency egress
Diver restraints
Pilot visibility
Emergency beacon
Emergency buoy

16. Paint Scheme

17. 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

18. 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

19. 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

20. Hull Selection Team race goals Formally Dubsub Optimize for speed
Research automated controls
Limited manpower
Formally Dubsub
Internal frame structure
Modular design

21. Hull Layout

22. 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

23. Questions?