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Re: [PSUBS-MAILIST] transiting dangers [was:cockpit control pics]



Ah, ok now I know where you are.
 
Someone in the Canadian geological service (forgot the dept.) has produced some outstanding 3D colour posters of submarine canyons including, I believe, the type at your link (u/w sand falls).  You don a pair of red/green lenses and WOW!!!  Visualising is one thing, seeing is believing.  Sidescanned.
 
If I find the web site I'll post the link.
 
I think transiting is a tough call.  Maybe boredom is the most dangerous issue.  At least for me.  Falling asleep and going into a gentle but fatal plunge would no doubt put a crimp in my day.  A dead-man's switch would be a really good idea.  Depth alarm, too.
 
I don't believe transiting over deep water is inherently dangerous.  Actually, the waves would be gentler, less nasty currents, too.  If something DOES go awry, well, it's hard to argue against being able to bottom in 60 ft. of water . . . get out, set off your EPIRB, and listen to the silly SOS's on Ch.16.     ;-)
 
Yeah, vis is to die for.  My best vis was not in tropical water (yet) but up here - 80 - 100 ft.  I was ecstatic.  I hear that the Carib has outstanding vis. (Cozumel, Bonaire, Cayman, etc.)
 
Rick
Vancouver
----- Original Message -----
From: Brian Cox
Sent: Saturday, December 03, 2005 7:20 AM
Subject: Re: [PSUBS-MAILIST] cockpit control pics

Rick,
         I'm in Ventura, CA  . The Channel Islands consist of four main Islands, Anacapa being the closest to the mainland, just 11 N miles from the coast.  Usually excellent visibility 50' + .   The problem is crossing over from the mainland the depth in the middle area of the channel goes down to around 600', at the deepest point.  If one were to take their sub across one should have a sub that could handle that depth, to be on the safe side.  If your subs safety factor was deep enough you could hug the bottom the whole way, assuming of coarse you had enough power to go 11 miles !  Or you could possibly glide across, glide down half way and then glide up the rest of the way, then you could conserve your batteries ! 
 
 There is a submarine canyon which is also around 600' deep that comes right into the Oxnard Plain and is most probably used by the Navy at Point Mugu Navy Base and weapons center.  There are some really cool sand falls that are off the steep canyoun walls.  I  stuck a picture at this link:
 
 
Brian
----- Original Message -----
Sent: Friday, December 02, 2005 22:28
Subject: Re: [PSUBS-MAILIST] cockpit control pics

Brian - you in the Seattle area?  MY concern is being torpedoed by some nuke from Bangor sub base while transiting from Vancouver to Seattle.  Maybe I should play the Doors rather than cool prerecorded sonar pings over my sound system.  The Juan de Fuca Straight is peppered with sono equipment.
 
Rick
Vancouver
 
ps: I Googled Annacapa Isl.  Says it's in California - near San Diego?
----- Original Message -----
From: Brian Cox
Sent: Friday, December 02, 2005 2:23 PM
Subject: Re: [PSUBS-MAILIST] cockpit control pics

  When I'm crossing the Channel to Annacapa Island I may have to bank suddenly to avoid a Navy sub !! 
 
Brian
----- Original Message -----
Sent: Friday, December 02, 2005 14:02
Subject: Re: [PSUBS-MAILIST] cockpit control pics

Don't you want to crab into that current while touching down on the bottom?  Naw, maybe you're right. :-)


On 12/2/05, rick miller < rickm@pegasuscontrols.com> wrote:
joe
 
     2 axis  control is good enough. I dont see see a lot of need for cross wind landing in a submarine.
 
rick m
----- Original Message -----
Sent: Friday, December 02, 2005 9:11 AM
Subject: Re: [PSUBS-MAILIST] cockpit control pics


Hi Peter,

"Repeating others' success is easier than building a better mousetrap"

An occasional reminder of this and other basics is always helpful. I have re-thought many details based on this very notion and every time I am reminded, there is a design improvement.

The Ercoupe reference was simply an example of mechanical linkage for single yoke / stick, three axis control for anyone so interested. I wouldn't give up the pedals on an aircraft but I imagine a sub doesn't have to worry about cross control issues causing much more trouble than maybe a little drag. My design wont have roll control at all.

Joe


From: atozed@juno.com
Reply-To: personal_submersibles@psubs.org
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] cockpit control pics
Date: Fri, 2 Dec 2005 07:11:17 -0800

There is a 3-axis joystick that moves left-right, forward-back, and up-down. Don't remember where, or who made it, maybe it's on Deep Rover or the Martin Marietta  Manned Maneuvering Unit.
 
Regarding Ercoupe, many have been converted to use rudder pedals.
 
Repeating others' success is easier than building a better mousetrap.
 
Peter K
 
On Fri, 2 Dec 2005 01:42:16 EST SFreihof@aol.com writes:
I'm thinking of a control stick like aircraft, but to one side (out of the way) and with a twist.  Why not control all three axes from a single stick?  Push/pull for pitch (like an aircraft elevator), left/right for roll (like aircraft ailerons), and twist for yaw (like aircraft rudder pedals).  This could eliminate pedals which would enable an exit hatch in the floor for my ambient dry sub.
 
Sounds good, but I suspect somebody here can troubleshoot....
 
Thanks...
 
Stan
 
In a message dated 12/2/2005 12:49:18 A.M. Eastern Standard Time, empiricus@telus.net writes:
I've got pics of about half a meg apiece of my steering wheel/control stick options.
 
I don't know what's hapenming with Moki - jeepers that thing is awkward to use.
 
Anyhoo, anyone interested can let me know and I'll send them offlist.
 
These are game control steering wheels and a joystick.  As far as aircraft controls go, they are extremely light.  I'll be adapting them for use with mechanical linkage, probably drum and cable with eighth inch S/S marine cable around through bolted pulleys.  There will be NO computer/motherboard/electronics aboard with the exception of my depth finder/collision avoidance.  The usual electrics, of course (nav lights, red night lighting, etc.)  I have a knotmeter, depth gauge and voltmeter.  C'est tout.
 
 

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