Presentation on theme: "Hernando County Schools 11 th International Human Powered Submarine Race – June, 2011."— Presentation transcript:
Hernando County Schools 11 th International Human Powered Submarine Race – June, 2011
Overview Previous Versions Philosophy
Single pilot Propeller Torpedo-shaped hull Pivot steering
Started in 1991 as a two-person sub. In 2003, a new, single-pilot sub was made for the 7 th ISR. Since then, it has been subject to many modifications.
Focus on: ◦ Improving and perfecting Steering cable system New propellers ◦ Handcraft everything
Hull Control Surfaces Propulsion Life Support and Safety Hatch and Emergency Buoy
Built for the 2003 ISR (22”H x 20”W x 11’6”L). General form shaped with NACA coordinates. ◦ Fiberglass shells crafted from mold ◦ Halves joined Plexiglass (¼”) window installed. In 2007, knee pods were built into the hull.
Cable-controlled rudder and dive planes steer the sub ◦ Joystick control ◦ Stationary horizontal stabilizers Four stationary pivot fins established a pivot point
Propeller-driven ◦ A bike crank turns a spiral bevel gear which turns the prop. This year two new props were designed ◦ An MA409 wing shape was used to hopefully improve performance by 10% Bottom wing chord is concave to improve water flow off the rear. ◦ Both props are thinner and more polished, differing in diameter.
SCUBA ◦ Air tank strapped in the rear ◦ Regulator and hose fed up to front Spare Air Bow is heavily reinforced
The hatch lock is closed with a spring-loaded lock. ◦ A safety cable connects to a latch-pin on the hatch allowing quick release. ◦ A clearly marked outside lever assures that outside help has access to the pilot. The emergency buoy is also spring-loaded. ◦ Floats up when control lever is released.
Primary testing locations ◦ Gulf of Mexico ◦ Weeki Wachee River Weeki Wachee’s clear waters offered the perfect testing environment.
The new team members became certified SCUBA divers. Weekly testing/training sessions with both submarines took place in the Gulf. ◦ Learning the loading/unloading procedure and how to pilot the submarine. Sessions provided an abundant amount of swim and SCUBA practice time.
Testing in the Weeki Wachee River Sub-chasing in the Gulf
Team with Sublime submarine 2011 Sublime Submarine Team Team with SeaWolf submarine Team members not pictured in team photos