RE: [PSUBS-MAILIST] NR-2 Thruster Arrangement

["Joseph Perkel" <joeperkel@hotmail.com>]

Brent,

I am assuming, (yet to confirm), that rigging the controls will be easier 
and more intuitive with both fore and aft in the X. Joystick left, or 
joystick right, all four are powered but in different directions. 
Directional control one hand....rate (current flow) the other. Joystick back 
all four thrust downward for rise, joystick forward all thrust upward for 
descent.

Also, for surface maneuvering, I'll get some twisting moment out of the aft 
mains in opposition. Might as well maximize this force around the vertical 
axis with a lateral as far forward as possible. I added one here.. 
http://www.frappr.com/?a=viewphoto&id=269116&pid=7143130&myphotos=1

Lucky for me, I'll be building all these thrusters and testing them in the 
pool long before, the sub itself!

Incidentally, the only "glue" time I get on the computer, is late at night 
to do CAD work at the expense of my sleep. The rest of the time is hit -n- 
run and, drive by emails!

Thanks for helping me "think" this through, I call it "walking design", it's 
what occupies my mind when walking around....... Drives my wife insane!

Joe



> From: "Brent Hartwig" <brenthartwig@hotmail.com>
> Reply-To: personal_submersibles@psubs.org
> To: personal_submersibles@psubs.org
> Subject: [PSUBS-MAILIST] NR-2 Thruster Arrangement
> Date: Thu, 26 Jul 2007 10:59:27 -0700
>
>
> Good Morning Joe
>
>
> I caught you glued to the computer again, didn't I? ; )'
>
> In regards to the NR-2 thruster arrangement, I was thinking about your aft 
> X thrusters and thought it might perhaps be a better and cheaper 
> arrangement for the aft thrusters to just be the basic one vertical and one 
> horizontal. This way you'll have the use of the horizontal thruster for 
> surface ops, without adding one in addition to the X thrusters in the rear 
> of your sub, like your thinking of doing in the bow.  If I understand 
> correctly, the X thruster arrangement is primarily to limit the debris and 
> mud that would be stirred up even more by a vertical thrust causing you 
> trouble in visibility in you view ports. So since you don't have any stern 
> view ports that I'm aware of I thought the X thruster arrangement might not 
> be the best option for the stern of NR-2.
>
> Regards,
>
> Brent Hartwig
>
>
> "Those are my principles. If you don't like them I have others. "
>
>                                                         -- Groucho Marx
>
>
>
>
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