[PSUBS-MAILIST] Alvin Jr is no more

[Alan James]

Joe,
a motor on the end of the torpedo tube would look great, but would possibly be too low
down making them more of an entanglement danger & more inclined to stir up sediment.
If you want to turn on a pin you would need to put the horizontal thrusters midship.
I am inclined to think Emile & Alec's set up with rotating thrusters midship is a really
good idea. You have your vertical thrusters plus additional horizontal thrusters for more
forward speed, & a back up to get home if your main horizontal thruster fails.
Alan


________________________________
 From: Joe Perkel <josephperkel at yahoo.com>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
Sent: Wednesday, March 5, 2014 10:12 AM
Subject: Re: [PSUBS-MAILIST] Alvin Jr is no more
 


Alan / Chris,
 
Yes, the torpedoes do double duty as battery pods. I was told I dont need them with the centerline propulsion unit, and although somewhat redundant, I'm inclined to put low HP propulsion units in isolated 1 ATM cans in the aft end of both. The forward ends would house high power lights for night exploration.
 
You can't see it well in this view, but the forward MBT is open at the bottom, that's a manipulator you see in there that would swing to both sides. The boat's mission requirements are photography/video, small object retrieval, and a lift bag deployment capability. Size of the forward viewport(s) are not yet determined, but forward visibility is hamperred in any case and would need to be supplemented by technology. Note the Gamma inspired side ports.
 
I want this to be able to swing 360 deg within its own length, translate horizontally and vertically with small bursts of thrusters. This means very fine bouyancy control, so a large volume centerline VBT is envisioned. The dive planes are fixed for most ops, used for dynamic dive control at speed and at periscope depth, (a dangerous place to be), the periscope uses micro cams.
 
Forward peak would house cameras and scanning sonar transducer in a housing seperate from the foward MBT. Those are in fact saddle tanks in this view and would be vented together in the sail. Aft MBT would end just forward of the housing that encloses the main propulsion unit.
 
This boat was inspired by the sight of James Franklin's boat hanging on the crane.

From: Alan James <alanlindsayjames at yahoo.com>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
Sent: Tuesday, March 4, 2014 3:06 PM
Subject: Re: [PSUBS-MAILIST] Alvin Jr is no more



Hi Joe,
are they torpedoes on the side or battery pods with motors attached?
With the upcoming advances in battery densities & prices, it tips the balance a bit more
in favor of just electric over the complications of diesel / electric.
It looks great, however it looks like you don't have a large forward view port.
is that correct?
Alan



From: Joe Perkel <josephperkel at yahoo.com>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
Sent: Wednesday, March 5, 2014 8:05 AM
Subject: [PSUBS-MAILIST] Alvin Jr is no more



I've been working on a more tow able friendly concept for some time. Its a reduced scale Seehund replica @ 18' length with a 36" OD hull. Shes all electric (No Diesel) and she sure looks pretty in this concept sketch. I hope it comes through because I am unable to add it to my project page. Incidentally, the Kriegsmarine flag is for image effect and would not be flown in public.

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