Hacked Gadgets Forum

June 4, 2014

Submersible Thruster

at 8:55 pm. Filed under DIY Hacks, Educational, Electronic Hacks

Submersible Thruster

 

If you are looking to design some underwater propulsion Dane from Transistor Man has completed a well documented Submersible Thruster build to get some pointers from.

The goal here is to design a submersible motor assembly that is able to accomplish the following:

  • Able to operate, submersed, up to 1 meter underwater while not¬†transfering more than 10ml of coolant into the surrounding water per hour (not leaky)
  • Capable of delivering >5kw of motive thrust, when driven at 40v from a sensorless 3 phase motor drive.
  • Utilize a clear housing assembly to allow for easy-to-observe internal failures or leaks
  • Actively aid in cooling the motor assembly, using condutive heat transfer
  • Maintain a rotating shaft seal while operating up to 2k RPM.¬†
  • Design using easy to assemble, easy to reproduce components (ex: off the shelf bearing & shaft seal assemblies, waterjet aluminum)
  • Utilize a propeller designed to operate at 2k RPM without significant cavitation effects at speed*

 

Submersible Thruster Static Test 2 from Dane Kouttron on Vimeo.


 

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2 Responses to “Submersible Thruster”

  1. mike Says:

    Woah, I really like these long detailed project logs. So many pictures, and details. Awesome writeup!

  2. the dude Says:

    Why not use magnetic coupling of the motor to the prop. Then you would not have to worry about a 10k rpm seal. Use water lubricated ceramic besrings on the prop side. For motor cooling you can do 1 of 2 thungs designed for liquid cooling or, fill the entire motor chamber with a dielectric fluid to transfer heat to the water. This design will give you grest depth capabilities

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