Norm,
To see fabrication pics for my boat, the R300, go to
the frappr link and hit more Cliff Redus' photos.
http://www.frappr.com/?a=viewphoto&id=2664457&pid=4280217&myphotos=1
The initial fabrication of the boat is complete and I have
started a series of commissioning test. She has been in the water for the
initial tea bag test. For the last 6 months I have been building a house with
me son so have not done any further work on the boat. I hope to be back
on the test program after my son and family have moved into their new
house. Initial test confirmed basic buoyancy states and hull/hatch
integrity and identified a bad solenoid valve.
The goal of this
project was to design a one-man submersible, designated R300, following ABS
regulations as much as possible( but not to the point of classing) that would
be streamlined to reduce drag and entanglements and have adequate power for
maneuverability using control surfaces. In other words, an
underwater jet ski. I have four years invested to this point, two in
design and two in fabrication.
Fiberglass Reinforced
Plastic, over syntactic foam, is used for the hydrodynamic shell that covers
the pressure hull. There are two ballast tank systems, main and variable,
which are soft and hard respectively. The main ballast tank, comprising tanks
forward and aft, are located at the longitudinal center of gravity of the
boat. Likewise, the Variable Ballast Tank is also located at the longitudinal
center of gravity. Both the MBT and the VBT are blown with
air from four Catalina S-19 scuba tanks, regulated down to 25 psi above
ambient water pressure. Longitudinal trim is achieved by
hydraulically articulating a sliding lead trim weight. A 120 VDC hydraulic
power unit supplies high-pressure hydraulic fluid to power hydraulic cylinders
on control surfaces and the hydraulic motor that articulates the trim weight.
Boat systems are integrated and controlled through an on board Programmable
Logic Controller with a touch screen operator interface. The propulsion system
utilizes an axial jet-ski impellor. The jet-ski nozzle is used for pitch and
yaw control while wing mounted ailerons are used to control roll.
A 13 HP, DC series wound motor, connected to ten 12 VDC deep draft AGM
marine batteries, is used to drive the jet-ski impellor. The motor is
controlled with a MOSFET DC motor control unit. A drive shaft connects the
drive motor to the jet pump. A hull seal around the drive
shaft is a cartridge type double mechanical seal with an glycol coolant acting
as a barrier fluid between the seals.
Specifications for the
R300 are given below:
R-300 SPECIFICATIONS
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* 24 inch acrylic hemispherical view port * 13 hp DC motor
* Jet Impellor * MOSFET DC motor controller * 120 VDC main battery system
*24VDC Emergency battery system * Water Hard Variable ballast
system * Drop weight system *
Fly-By-Wire Control System * Air systems * Oxygen system * Carbon
Dioxide scrubber * Touch Screen Operator Panel/Display * Carbon dioxide &
Oxygen level monitors * VHF Radio * Alarm and monitoring
systems * Mechanical and electronic depth meters *
Electronic compass * Trim and heel indicators * External halogen lights * Fire
Extinguisher * Onboard battery chargers *
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TECHNICAL DATA
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MAIN
DIMENSIONS
Length 19 ft
Beam 6.5 ft
Height 4.1 ft
Draft 31 in
Pressure Hull diameter
30 inches
Pressure Hull
material
ASTM A516 Grade 70
Pressure Hull
thickness
0.25 inches
Dry weight (excluding payload and
pilot) 4,214 lbs
Operational depth 300
ft
Payload capacity (including
pilot)
232 lbs
Drop weight
300 lbs
Crew 1
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PROPULSION & POWER
SUPPLY
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Jet
pump
Jet pump, axial flow, single stage
DC
motor
13 hp DC motor with MOSFET motor controller
Main batteries
10 @100 Ah / 120VDC
Emergency battery 2 @100 Ah /
24VDC
Battery endurance
7 hrs (normal operation)
Emergency battery endurance
72 hrs (hotel load only)
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GAS SYSTEMS
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Main ballast - Soft
7.6 scf
Variable ballast - Hard 1.8
scf
Air 76 scf
/ 207 bar
Oxygen
78 scf / 139 bar
Oxygen endurance
7+72 hrs
Reserve of
Buoyancy
10.7%
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PERFORMANCE
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Normal
speed
7 knots (8 mph) for 8 hrs
Max
speed
20+ knots for 9 minutes
Range 66 miles (normal operations)
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Cliff
-----
Original Message ----
From: Norman <nparmley@suddenlink.net>
To:
personal_submersibles@psubs.org
Sent: Wednesday, July 11, 2007 11:18:51
PM
Subject: [PSUBS-MAILIST] Interest in your project
Cliff Redus:
Hi,
Cliff can I get more info on your
project. It looks vry interesting.
Norm
Parmley
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