[PSUBS-MAILIST] vertical thruster orientation

[Alec Smyth via Personal_Submersibles]

Hi Jon,

There is indeed much less thrust in reverse, plus my latest props that are
supposedly more efficient also make a bothersome noise when reversed. I'd
hate to run the thrusters in reverse the whole time during a dive. I orient
them so they push the sub down, and dive slightly buoyant. That has two
advantages. The prop wash is directed away from the bottom, so you don't
ruin visibility. And if something malfunctions, the sub surfaces as a
fail-safe.

Best,
Alec

On Thu, Aug 9, 2018 at 8:35 PM Jon Wallace via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

>
> For those of you using fixed thrusters for vertical diving and ascent, I
> am curious if you orient the normally "forward" thrust to propel your
> vessel upwards or downwards.  My assumption is that there is less thrust
> produced in the "reverse" direction of a minn-kota than the "forward"
> direction.  I have been thinking that I probably want to orient my motors
> to produce maximum thrust for surfacing rather than diving, but not sure it
> matters.  Opinions?
>
> Jon
> _______________________________________________
> Personal_Submersibles mailing list
> Personal_Submersibles at psubs.org
> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20180809/8c327957/attachment.html>