[PSUBS-MAILIST] vertical thruster orientation

Alan via Personal_Submersibles personal_submersibles at psubs.org
Fri Aug 10 17:04:32 EDT 2018


Jon,
on my original design I had rotating thrusters so that they would
compliment my horizontal thrusters for added forward speed &
for redundancy on steering. Without them, if one of my horizontal thrusters, 
or more likely motor controllers failed, I would go around in circles.
I imagine it would be easier to drop a rotating thruster than a fixed thruster.
Having said that I am now having 2 fixed & 4 horizontal thrusters,
reason being it will give me more room inside my one person sub not
having the rotating mechanism & because I am making my thrusters,
adding extra isn't too expensive. 
   One of my thoughts on the rotating thruster was to have it operated by 
a motor. There are some incredibly powerful & inexpensive geared motors
about that could handle that.
Cheers Alan

> On 11/08/2018, at 8:27 AM, Jon Wallace via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Thanks for the feedback folks.  The issues of bearing wear and running in reverse mode to control a positively buoyant sub is well taken.  I was thinking more about potential entanglement and having maximum forward thrust available to help push to the surface if necessary.  I will have to think about this some more.  
> 
> Although I was intent on fixing the thrusters permanently for simplicity it looks like I do have the option to retain the original rotating configuration and maybe that would give me the option to position them for multipurpose use.  If I take this route I plan on utilizing the SNOOPY approach of locking them down rather than having to hold onto them.  
> 
> Jon
> 
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