[PSUBS-MAILIST] bow thruster

[hank pronk via Personal_Submersibles]

Autorotate, maybe wrong word, I meant both props turn opposite directions.  Are you thinking of vectoring in multiple directions or rotating 360 degrees.I was once working on a single thruster design.  The thruster could point in any direction so the sub only needs one thruster.  Hank 

    On Friday, March 25, 2016 5:12 PM, Sean T. Stevenson via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
 

 It will be similar to a surface vessel bow thruster, only instead of a thruster tunnel in a hull, it will be housed in a symmetric nozzle which itself can be vectored with an actuator.  I'm designing the gearbox from scratch - a few off-the-shelf spiral miter gears, tapered roller combined load bearings, shafts, seals and ports for oil circulation. Not sure what you mean by autorotate? They will not freewheel, if that's what you mean. Zero output on the hydraulic servovalve will lock off fluid flow (and thus lock out motion), although the gearbox will still be pressure compensated from the discharge side.Sean

On March 25, 2016 3:59:31 PM MDT, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
Hi Sean,It sounds like you are going for something like a hydraulic bow thruster, I am not sure if the props autorotate.Hank
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