The Jesse Too

The Crew

AssignmentsDesign Philosophy, Design Fabrication Hull

Shannon JorgensenAriel Wise-Rios

Propulsion, ControlTenzin LamaAdam MartinoTrevor ColeyPatrick Scarlett

Life Support System, Safety, Testing and TrainingJennifer RuthJulia McKayJared Arcari

Journal and BudgetJade SpitaleNicole VigoritaSarah BellDanielle Gibbs 

Goals & ObjectivesForm a cohesive teamDesign and make a submarine that is

balanced, buoyant, safe, and fastCertify the team by NAUI guidelinesLearn to work underwater using scuba gearExperience a variety of testing situations and

conditions under waterSuccessfully race the courseHave fun while learning real world skills

Design Philosophy

Our philosophy was to accommodate the largest individual

Made to be adjustable to any heightThis offered any crew member to pilot the

sub if they were interestedAnd we want to win the race!

Hull

11 feet long28 inches maximum diameter Hull construction is a 3-phase process:

“plug,” mold, and then the final hullCreated in two halves then bonded and

sealedReceived help from Peter Legnos of LBI Inc.,

a local company that designs and builds hullsHull halves bonded and strengthened along

seams

Propulsion System Components

The pedalPedal strapCrank Large front sprocketBicycle chain

Universal jointRight angle driveIntermediate shaftPropeller shaftThe propeller

The main components that make up the submarine’s propulsion system include:

Propeller DesignConstructed “the trainer” to house the propulsion

system until the hull of the vessel was completedGoals: Reach a propeller speed of approximately

180 rpm that would generate the greatest thrust without being unreasonable for our pilots to pedal for the length of the course

Tested two different blades, five different tests in total

Performed all of our propulsion system testing at Survival Systems in Groton, Connecticut

Concluded that steel propeller was more durable and a better fit than aluminum

Drive TrainPropeller motion driven by pilot through bike

crank.Crank rotation-coupled by set of Curtis 200M

1.5:1 bevel gears through a bike chain.Primary sprocket-30 teethTotal gear ratios: 3.5:1, 3.0:1, 2.7:1Universal joints included where drive shaft

connects to the output of the gear box and where it attaches to the propeller bearing housing.

Crank rate is expected to be between 60 and 70 rpm

Pilot Ergonomics

Prone, facilitating a full view of race course

Pilots will use shoulder restraints made from a standard marching band drum frame to push against when pedaling

Restraints and propulsion system is adjustable to accommodate pilots of different heights

Control System ComponentsTwo horizontal fixed fins on the rear of the vessel

-Helps keep the submarine level while submergedTwo vertical rudders attached to the rear of the vessel

-Helps move the submarine left to rightTwo horizontal rudders attached to the front of the

vessel-Helps move the submarine up and down

Modification to the hull of the submarineDrilled holes on the top of the vessel to release the air

exhaled by the pilotOpenings on the bottom of the hull allow for flooding

and emptying the water during launch and recovery

Life Support System

Measured Air Consumption

Primary Air Tank Placement Usage of traditional SCUBA equipment:regulator, flippers, mask, air tank

Safety

Color: Lipstick Red Escape: Escape hatch lined with PVC

Scuba Diving

Open Water Dive

Testing and Training

SCUBA certificationSub Trainer- submersible trainer used to

experiment with drive train and propellers and give student initial pilot training

Student built out of wood to measure propulsion parameters

Used to determine pilots’ air consumption rates when operating the drive train at max RPM

Propeller Thrust Tests

Blade Type

Thrust at 180 rpm (lbs)

Flat, 10 deg

30

Flat, 15 deg

51.9

Foil, 10 deg

61.5

Foil, 15 deg

62

•Tested the propeller shape for impact shape and pitch has on thrust

Budget

Thank You!From the Miss Jesse Too Crew