Transcript Document
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
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.
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. Biaxial cloth with one layer of
matt in between.
The two halves were joined
together.
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.
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.
Control Design
SubZero has two vertical
and two horizontal control
surfaces that are actuated
by Teleflex cables.
Three stabilizing fins.
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.
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.
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.
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.