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Springstead High School

Springstead High School. Overview + Goals. 17 team members Two-manned sub for increased performance Newest entry for Springstead High School Participation from entire team. Design Philosophy. Maximum human power New drivetrain design. Hull Design + Fabrication.

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Springstead High School

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  1. Springstead High School

  2. Overview + Goals • 17 team members • Two-manned sub for increased performance • Newest entry for Springstead High School • Participation from entire team

  3. Design Philosophy • Maximum human power • New drivetrain design

  4. Hull Design + Fabrication • Students laid out a full-scale drawing of SubZero • SubZero was designed to be 15ft long with a diameter of 24 inches. • The hull of SubZero was created from a male plug constructed of plywood.

  5. Hull Design + Fabrication (Cont.) • The plug was sanded, covered with visquen and coated with mold release wax. • Two half-hulls were laid up using two layers of 12oz. Bi-axial cloth with one layer of matt in between. • The two halves were joined together.

  6. Propulsion Design +Fabrication • The team worked with a local machinist to create a straight 6 to 1 gear drive. • One pilot would be on his/her stomach and the other pilot would be on their back. • Stainless steel pipe for driveshaft.

  7. Propeller • SubZero’s propeller was created from flat stainless steel stock. • It was heated red hot and forged into the shape dictated by the Java Prop program. • Additional strengthening and filling was done with tig welding. • It was finished off with hand sanding and polishing.

  8. Control Design • SubZero has two vertical and two horizontal control surfaces that are actuated by Teleflex cables. • Three stabilizing fins.

  9. Life Support Design • Each pilot wears a spare air on his/her chest. • Two 30 cu.ft. scuba tanks are mounted fore and aft. • The front tank is located directly below the pilot. • The rear tank is located on the ceiling above the pilot.

  10. Safety • The bow is heavily enforced. • Pilots are visible at all times with a fore window as well as an aft window. • Hatches float freely when released. • Foot straps are clearly visible with red cloth. • Strobe light provides a steady location.

  11. Testing • SubZero is tested in the Gulf of Mexico as well as the Weeki Wachee River. • Dozens of testing hours has been logged. • This revealed numerous needed to be resolved.

  12. Training • The SubZero team certified 7 new divers. • Team members train using stationary bicycles, actual bicycles and running. • Each team member was trained in each support position.

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