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  • Holy Grail of Mechanical Design?

    Discussion in 'The Leisure Lounge' started by Paul T, Oct 21, 2012.

    1. Paul T

      Paul T Well-Known Member

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      This is the version that uses atmospherically compressed air as the motive medium and heat as the fuel.

      There is another version with a combustion chamber and two Tesla valvular conduits. This version gets hot. I would be using an aluminium casing for that version.

      The discs are designed to run at supersonic speeds in the turbine / rotary engine.

      Spring steel because it yields slightly at very high RPMs.

      At 52,000rpm the rotor will be transonic and clouds will form inside the turbine. The turbine will condense the water and the pump will eject water from the exhaust.

      Good point on the CTE. Something to think about.

      I’ve been thinking a better way might be to forge the discs.

      I’d welcome material suggestions.

      My aim is to build the fastest rotor possible.

      The current bearings I have are designed to run at 156,000rpm which would be Mach 3.

      I aim to build air bearings capable of running from atmospheric pressure just like Tesla used.

      New Way off the shelf air bearings sell some 1/4” air bearings rated at 140,000rpm but require 60 psi.

      My aim is to learn and to teach with a bit of banter.

      Belittling people I’m not a fan of.
       
      Last edited: Aug 4, 2019
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    3. Paul T

      Paul T Well-Known Member

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      Here is version 0.25



      The next version 0.3 will have an upgraded motor stand, motor controller and blueprinted, balanced rotor in the turbine.

      I hope to achieve supersonic speeds with the turbine and see the cloud formation.

      I really need to get the pump rotor balanced.

      I expect the viscosity to jump 85 times that of air at this point and implosions occur causing large amounts of vacuum and water to be ejected from the pump exhaust.

      The motor is a starter motor similar to a vehicle engine.

      I think adding a port to the volute of the pump could also function as starter motor.
       
    4. Paul T

      Paul T Well-Known Member

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      [​IMG]

      I predict the 126mm rotor will take up to 52,000 to reach speeds where clouds are formed inside the turbine.

      [​IMG]

      [​IMG]

      So Tesla discovered a way to harness nature better than the water wheel!

      Did you know the first power station in the world was designed by Nikola Tesla to harness Niagra Falls?

      The machine I am building is Nikola Tesla's evolved version. His final works!

       
    5. JDavid

      JDavid Well-Known Member

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      I have to give it to you. You have been more committed to this project (though it has morphed enough that I don't think you could really call it the same project anymore) than I have been to any project of my own.

      I hope that you haven't gone too far in to debt chasing a PPM.
       
    6. Paul T

      Paul T Well-Known Member

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      I’m not trying to build a PPM and how much money it has cost is not anyone’s business.

      I’m building a machine that harnesses man made cloud formation using supersonic rotor speeds.

      The viscosity of the cloud is 85 times that of air. That’s a pretty large mechanical advantage in terms of amplification.

      Jet planes do it so there is no reason the turbine rotor won’t do it

      Seeing is believing!
       
    7. JDavid

      JDavid Well-Known Member

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      It's true that's why I didn't ask you how much you spent. And I also pointed out that your machine is very different from the one that you originally started with. The PPM that you started with is what everyone was telling you wouldn't work.

      There is a reason that we use steam to run turbines.
       
    8. Paul T

      Paul T Well-Known Member

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      Here was the last video v0.275





      Here is the new setup with new engine mounts, motor bracket, alternator bracket, pulleys and belts.

      At this stage I have the single phase motor wired to the VFD using no capacitors and the internal capacitors doing their work.

      I don't understand the manual for the VFD it is a XSY-AT2, I also have an XSY-AT1.

      Apparently other VFDs have much more concise manuals rather than a 4 x A4 booklet.

      I will be adding the capacitors back and switching to the 10 amp voltage motor controller. I remember it had much more torque.

      I may get a bigger fan for cooling as it makes a lot of difference when testing.

      Ideally I would find the right motor that doesn't get too hot.

      Bare in mind the motor is literally a starter motor.

      The secret is that the Tesla pump is in fact the simplest four stroke engine ever to exist.

      Suck at the centre of the rotor

      Compression along the spiral path.

      Power at the periphery when the air phase changes into cloud amplifying the viscosity of the fluid to 85 times that of air.

      Exhaust at the end of the volute

      Suck, squeeze, bang, blow!

      The secret is getting the rotor periphery speed to Mach 0.7

      Tesla hid this secret very, very well.... he patented the machine as one in 20 countries. He thought he had it made! It was only the US patents that got split into turbine and pump.

      The truth can be understood more clearly by reading the British Patent 24,001

      https://teslauniverse.com/nikola-te...gy-or-deriving-energy-fluid-and-apparatus-use

      Tesla's investor "Astor" was on board the Titanic!

      The secret almost got buried that's for sure!

      Now it is up to us to keep it alive!

      "In the pump, the radial or static pressure, due to centrifugal force, is added to the tangential or dynamic, thus increasing the effective head and assisting in the expulsion of the fluid. In the motor, on the contrary, the first named pressure, being opposed to that of supply, reduces the effective head and the velocity of radial flow towards the center."

      "A self-regulating machine is thus obtained bearing a striking resemblance to a direct current electric motor in this respect that, with great differences of impressed pressure in a wide open channel the flow of the fluid through the same is prevented by virtue of rotation. Since the centrifugal head increases as the square of the revolutions, or even more rapidly, and with modern high grade steel great peripheral velocities are practicable, it is possible to attain that condition in a single stage machine, more readily if the runner be of large diameter. Obviously this problem is facilitated by compounding, as will be understood by those skilled in the art."

      With Tesla's engine the exhaust is cold as it doesn't work using friction it uses viscosity.

      This was Tesla's first "MOTOR" that got cold, not hot!


      Add the turbine with port you get backwards and forwards rotation of axle that can be run at all different speeds....

      Add the turbine with diverging nozzle you have mechanical alchemy, air to water!

      Sounds nuts I know!! hahaha

      If anyone can give me any sound advice on the VFD or motor that would be appreciated.

      Hopefully the next modifications with an upgrade to the motor, motor controller and fan will allow the magic Mach 0.7 at the periphery.

      I estimate this to be 5740RPM

      Here is the latest video v0.28

       
    9. Paul T

      Paul T Well-Known Member

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      I would be grateful if anyone can explain how to calculate the correct motor HP required.

      There probably is a calculator out there that I haven't found yet. Many thanks if anyone knows of any?

      I have an investor now and he has given me £2000 for running costs and £500 for a motor.

      Specs of Rotor:#

      1. 800mm diameter
      2. 27KG
      3. Balanced to 10,000rpm
      4. Transonic (Mach 0.7) 5740rpm
      5. Supersonic (Mach 1.0) 8200rpm

      Specs of Pulleys:#

      200mm Driver
      60mm Driven
      C-C 570mm
      Belt Length 1550mm

      It would be good to know how to calculate exactly the correct HP for the job before making a purchase.

      Maybe there is a lot of trial and error because the VFD (variable frequency drive) inverter is the unknown part.

      Apparently TECO are decent brand according to a motor engineer I spoke with.

      New subject for me these motor VFDs.
       
      Last edited: Sep 5, 2019
    10. Paul T

      Paul T Well-Known Member

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      After giving up on the 2hp single phase motor I bought a 4hp, 2 pole, 3 phase motor and borrowed an 8" fan and found a duct and silencer lying around.

      [​IMG]

      [​IMG]

      [​IMG]

      I'm now getting a new bracket fabricated for this motor. The shaft size is going up from 19mm to 28mm. I've already bought a 28mm taper lock bush ready for the 200mm pulley.

      If this motor hasn't got enough power then I might have to change to a 2.2:1 ratio 132 driver and 60mm driven rather than the 3.3:1 200mm driver and 60mm driven.

      Ideally I would be using one of these but my local motor dealer they wanted twice the price of a forced vent motor.

      [​IMG]

      [​IMG]
       
    11. s.weinberg

      s.weinberg Well-Known Member EngineeringClicks Expert

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      "In the pump, the radial or static pressure, due to centrifugal force, is added to the tangential or dynamic, thus increasing the effective head and assisting in the expulsion of the fluid. In the motor, on the contrary, the first named pressure, being opposed to that of supply, reduces the effective head and the velocity of radial flow towards the center."

      "A self-regulating machine is thus obtained bearing a striking resemblance to a direct current electric motor in this respect that, with great differences of impressed pressure in a wide open channel the flow of the fluid through the same is prevented by virtue of rotation. Since the centrifugal head increases as the square of the revolutions, or even more rapidly, and with modern high grade steel great peripheral velocities are practicable, it is possible to attain that condition in a single stage machine, more readily if the runner be of large diameter. Obviously this problem is facilitated by compounding, as will be understood by those skilled in the art."

      Translation, because you apparently believe this is describing some kind of magic.

      Air under rotation flows outwards, due to inertia. Assuming the pump has an intake at the center, and an outlet at the periphery, and the motor has the reverse, this motion of the air would tend to increase the input/output of the pump, and reduce the input/output of the motor.
       

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