Transcript Il Calamaro - International Submarine Races

Il Calamaro
CARTS INDEPENDENT
Introduction
 Overview & Goals
 Design Philosophy
 Design and Fabrication
 Hull
 Propulsion
 Control
 Life Support System
 Safety
 Testing and Training
 Journal and Budget
 Closing
Overview & Goals
Mission:
To design and construct a oneman, non-propeller
submarine that will successfully complete the ISR course
within a modest budget.
Successfully
complete the
project and
cross the
finish line
Maintain
buoyancy
Gain project
management,
design and
construction
skills
Recognize the
contributions and
knowledge of
individuals we
encounter on our
journey and ensure
we graciously
acknowledge their
contributions
Design Philosophy
Primary
concern:
completion of
functional
submarine
Used
materials that
were on hand,
or cheap and
easily
acquired
As little
outsourcing as
possible, but
used expertise
from the
community
Handson
approach
Hull Construction
Hull Construction
• Ellipsoidal fore, cylindrical
middle and paraboloidal aft;
design based on pilot outline
• Rhino CADD program used to
calculate size of disks,
subsequently cut from 1, 2 and 3
in polystyrene
• Polystyrene disks skewered on
rod and lathed to form plug
shape, covered with drywall
spackle, sanded, covered with
plastic wrap and a coat of
Johnson’s Paste Wax
• 5 layers of 10 ounce fiberglass
applied with epoxy resin 1/3 of
the hull plug at a time
• hatch, remove the polystyrene,
and unskewered the hull.
Hull Construction – Buoyancy & Trim
Buoyancy & Trim
• Recycled chicken feed sacks
cut into 4X5” sections, sewn
together and stuffed with 150
pennies; easily repositioned
at the bottom of the hull by
Velcro strips
• Amount of foam needed to
make sub neutrally buoyant
was calculated
• X amount placed in front and
x amount in back
• Foam scored to form to hull
and resined in place
• Three penny sacks Velcroed
to bottom
Hull Construction - Windows
Windows
• Inspired by Space Ship
One design
• .118” acrylic heated in
oven for 15 minutes and
then pressed on mold
• Roughly 4-7” apart
• Attached to hull with
epoxy mixed with
hardner and filler
• Sanded down to
eliminate sharp surfaces
Propulsion
 Early brainstorming sessions led
to basic foundation of current
propulsion design
 Pilot in prone position, resting on
two symmetrical 1 ¼” aluminum
shafts braised to a t-bar
underneath
 The two shafts contain eight ft
long aluminum pushrods that slide
within
 Pedalblock attached to t-bar,
attached to pushrods by cable
Control
 Dive planes





Inspired by nature
NACA airfoil 0012 cut into blueboard with polystyrene wedged
between and covered with fiberglass
3/8 in threaded steel rod bent to 90 degrees and embedded in plane
with epoxy resin
Rods enter the hull 1/3 from nose and below the midline
Rods attach to ½ in aluminum electrical conduit bent to 22 degrees
to form a handlebar
 Stabilizers
 Design
 4 stabilizers fixed to the hull at the rear of
the vessel, spaced at 90 degrees
Life Support
 VO2 max testing at University of Maryland for both
pilots
 Testing suggested 40 cubic ft tank sufficient to meet
ISR regulations for each run
 Submarine includes:


63 cubic ft tank with octopus attachment
13 cubic ft pony bottle with single regulator attachment
Safety Components
Beacon
Emergency Buoy
Pedals/Shoes
Harness Release
Emergency Hatch Release
Testing & Training
Acknowledgements: Donors & Supports
Knights of Columbus,
JFK Council, Accokeek,
MD
Ray Rye
Lowe’s
Carl Gotzmer
Bike Doctor
Waldorf, MD
St. Mary’s Sodality,
Clinton MD
NaviSafe
Bryan’s Road Building
Supply & Staff
OceanMarine
Jimmy Walls & MidAtlantic Foam
Raytheon
Charles County
Parks and Recreation
Ferris Apiaries
Marbury, MD
John Hollyfield
Professor James
Hagberg, Staff and
UMCP Grad Students
John Balazek
Russ Elkins
Hans Haucke
Fredrick Jeffrey Frese
Carts-Ingram
Family
Joe Blue
Chris
Satterwaite
Josh Urban
Anne-Marie
Ramsey
Tony & Gayle
Carts
Chris and David
McDonald
Marianne
Retrum
Journal & Budget
Category
Amount Spent
Development
$375
Hull
$1185
Windows & Hatch
$50
Propulsion
$1300
Buoyancy & Trim
$220
Steering
$30
Life Support
$750
Emergency Systems $65
Race Day Logistics
$1000
Documentation
$30