Organizer : FURE (Foundation for Underwater Research and Education)www.isrsubrace.org

Location: Carderock Division, Naval Surface Warfare Center, Bethesda, Maryland

Competition Dates: June 27 – July 1, 2011

Design Presentation

Purpose: -to inspire students of the various engineering disciplines to delve into broad areas of underwater technology advancement and to provide them an educational experience that translates their theoretical knowledge into reality; -to foster advances in sub-sea vehicle hydrodynamic, propulsion, and life support systems;

-to increase public awareness of the challenges faced by people who work in and explore the ocean depths.

Submarine

Human Powered Submarine?

Most Common Design Rational

Typical Design Results

Fastest Human Powered Land Vehicle?

Over 83 mph / 133 kph

Note: Air is also a fluid!

Typical Propeller Powered Vehicle in the fluid air?

All power is determined by the capability of a single person:

The ergonomics of the vehicle impacts the amount of power available

The efficiency of the propulsion and power transmission systems is critical to delivering the available torque to the propeller

Design Observations

This is a Human Powered Vehicle competition in water

The weight of the vehicle doesn’t matter, but entrained volume is critical:

Design Observations

F=m*a m= sub mass + added mass

In a wet sub with a conventional hull, this added mass is significant, compared to the vehicle’s weight

“The Yellow Rose of Texas” was engineered to minimize entrained water volume.

Lone Star Concepts Design Results

Structural Frame,All systems and controls attached

“Bolt” on Hull,Non-Structural

RecumbentPilot Position

Lone Star Concepts Design Results

Linear DriveSystem

Dual Shaft Miter GearBox (Commercial Items)

90 deg Miter Gear Box (Commercial Item)

Structural Tube w/ Internal Drive Shaft for Propeller

Assembly Mounting

Ducted Propeller System

Design Revisions• Our original design utilized additive manufacturing

to rapid prototype a solid plastic hull• The revised design called for a hull skeleton,

covered by a low-friction skin.Many skins were considered:– Vinyl – neoprene– Leather– Duct tape– Paper mache (waterproof of course!)

• The thin wire mesh hull was chosen for several reasons:

– Elimination of the entrained water mass– Biomimicry of shark skin– Ease of construction– Budget contraints

Current Sponsor List

Thank you for your consideration of our request for sponsorship

For additional information and to discuss the advantages of being a sponsor, please contact:

Keith BlaylockTeam Captain, Lone Star Concepts kbfab2010@gmail.com 281-844-1183

Team Information

• Team Name: Lone Star Concepts• Design Category: One-Person Submarine, Propeller • Submarine Name: “The Yellow Rose of Texas”• Team Captain: Keith Blaylock• Team Members: Michael Blaylock, Joe Simon, Daniel Blaylock• Funding: Corporate and private sponsorships