BIG BIG Name Pierre Poulin Age 31 Profession

BIG!

BIG! Name: Pierre Poulin Age: 31 Profession: Robot programmer, mechanical design. Scholarship: Degree in mechanical design. Hobby: Quad bike riding, modeling, rock-climbing.

BIG! Project overview how it all started! The Neptune project influence and it's all in the gene. . . from 1 atm to dry-ambient; the pressure choose for me! other considerations: money, time, work place,

BIG! Budget Total budget planned: 1500$ cdn. Spend today: 700$ for the frame, ballast system, plumbing and windows. Supplied by my father: the air cylinder, the pony tank, the 1 stage regulator. Electrical planned: 650$ for 2 minn-kota 28 lbs and 2 deep-cycle batteries. I’m pretty confident to be able to achieve the budget I have set.

BIG! The Two Phases A budget safe choice. . . Phase I: to have a ship that is air-tight, have ballast system operational, all safety features, and can raise and drop into the water without problem. Phase II: will feature everything electrical. motors and light.

BIG! Timeline project started on January 2003. phase I should be completed during winter 2003 -2004. phase II (complete project) should be completed for next summer 2004.

BIG! Determine Design

BIG! Build Frame

BIG! Add Shell

BIG! Add other components

BIG! Specifications Displacement: 1092 lbs. Habitable volume: 17. 5 cf. Over-all dimensions: 77" long, 34" wide, 38" high. Air supply: one 220 cf cylinder at 2000 psi. (12 time the habitable at 1 atm) Intended operating depth: 30 feet. Max depth: 250 feet. (the 125 psi system could not blow ballast deeper then 250 feet)

BIG! Safety Features drop weight can be dropped from inside or outside the sub pony tank inside. ballast can be operated from outside (divers) flooding valve. approximately 12 hours of autonomy at 30 feet. independent small air reserve for emergency ballast operation. hatch can be opened from in and outside of the sub. air regulator for external diver.

BIG! Habitable pressure control 1. 2. 3. The 3 alternatives scuba regulator pressure relief valve natural pressure equalisation.

BIG! Buoyancy Control the use of a 5/3 pneumatic valve, pneumatic cylinder and piston.

BIG! Propulsion 2 minn-kota 12 V 28 pound of thrust each. One on each side of the sub.

BIG! Ballast I have decided to build soft ballast but they can be used as variable ballast tank when I close a valve. The ballast can be operated even if sub is upside down.

BIG! Pressure relief valve I will use a scuba diver first stage pressure relief valve to go from 2000 psi to 125 psi.

BIG! The Neptune Project

BIG! THE END