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Hammerhead draft #2
Changes:
Thrusters: I reversed the thrusters so the fore thrusters are low
and the aft thrusters are high. This increases the distance I am able to
separate them which will improve maneuverability.
Buoyancy Tank: A foam/fiberglass section that will wrap around the
pressure hull and extend aft to the end of the exterior frame. It will have a
flat, textured top for walking on. The sides and end will curve down to create a
depression in the underside that would have an air-bladder fitted to it
(about identical to the BC worn by divers).
Trim Tank: A vented fiberglass shell with another air-bladder fitted
inside it for pitch trim.
Air Tanks: Arranged fore-and-aft in two rows of three tanks. If I go
with a single rear thruster, the tanks will be V'ed out at the top to allow for
cleaner water-flow between them for the thruster. If I go with dual rear
thrusters, the tanks will be stood upright side-by-side.
Argon Tank: to pressurize battery-box
Exo-Cage: very basic partial drawing of exterior cage to give
approximate shape of sub.
Thoughts: I'm not sure I can get the sub's hatch far enough out of the
water to allow wet entry/exit in anything but the best circumstances...yet. I'm
also not sure how to power and steer 3-4 independent thrusters. I know how I
want to do the human interface (SpaceOrb 360 is a PERFECT controller for this
with some modifications). However I'm torn between electrical or hydraulic
motors and servos, or some combination thereof.
Regarding the single-curve view port: 6' tall by 4' wide, curved
onto a 3' diameter cylinder along the vertical axis. One horizontal support in
the center, and two equi-distant vertical supports. Window edges and supports
would be 2-3" widths of contact. This would divide the unsupported window
sections into areas of less than 3' long by 1.3' wide.
Designed depth of the sub should be ~500' with a "rated" depth of
250'
Actually- I want to design it for 250psi. 250psi/14.7psi (one atmosphere)=
~17atm. 17atm x 33'(depth per atmosphere) = ~561'
I've sent an e-mail to a company that can supply 1/2" polycarbonate sheets
in 8'x4' sections (or any smaller rectangular section) regarding its strength
and ability to be bent.
Any feedback would be greatly appreciated!
In a message dated 4/5/2005 10:59:28 P.M. Eastern Daylight Time,
mholt@ohiohills.com writes:
I've been thinking about this. It sounds like a new version of |
