Why This Propeller will Change Transportation Forever

".... could drastically reduce shipping costs..." Politicians everywhere: not if we have anything to say about it

A waterjet is not an engine. It has an impeller which is turned by an external power source such as an engine...

The bubbles shown in the video are from the exhaust of the engine. Outboard motors exhaust through the hub of the propeller

The sharrow props are not 3D printed, they are CNC'd from billets.

Some of these technologies have been around for more than a couple decades (like pump jets for submarines) and some are fairly current topics (like toroidal propellers and coaxial flow). Despite the hype around toroidal propellers, they might not meet the hype. If tip vortices is the issue, it's probably a lot cheaper and easier to manufacture ducting around a standard propeller than using a toroidal shape. But, there might be some benefits from a toroidal shape that's not talked about much like possible resistance to snagging. Winged sails are a fairly common idea that has been around for as long as there have been sailing ships. There seems to be a lot of research into electrical propulsion, the new Chinese Fujian aircraft carrier is supposed to be powered by some new invention but in general I don't know that there has been much published on advances in technology by anybody.

Appreciate this grab-bag overview of recent developments in propulsion engineering. Advances in electric motor/generator technology, probably developed primarily for automotive use, getting translated over to the marine world.

Excellent innovation!

I remember tests of aircraft wings of the same type. Tests have shown no advantages. In this case, some of blade surface don't work too. But I suppose that these new blades are more strong; so they may be made more thin and thus producing less drag.

Very Nice and Informative Thanks 👍👍

Here's why I'm excited about that toroidal propeller. I don't own a boat, yacht or container ship, so I couldn't care less for the maritime efficiency. I also don't have any drones and I actually don't even know, if I like the idea of them being more silent. BUT ... I own a gaming computer and those propellers have the same performance jump if used for cooling fans. I also own a fan. Actually, I own 3 large fans for the summer, because Europe has no AC culture. More efficient and more silent FANS are what I want to see. Today, preferably. But I'll take tomorrow as well. Next week is already making me unhappy. Next months would make me cry. So ... can we make these things very popular real quick, pretty please?

good Report, thanks

This Propeller can really change transportation- I am sure that the question of the production will be solved with new 3D-Printing technologies in future.

We make things better all the time and the savings are never passed on to the consumer

With all the fuel savings bought in for ships since the 80s you should arrive in port with more fuel in the tanks than you left with.

cant wait to get one for my car

Vielen Dank allen Verteidigungspolitischen Richtlinien............................................!

It would be interesting to know, how far the developement of the toroidal propellers for big ocean ships are and what kind of results they got.

Love the potential of the toroidal propeller. There are skeptics on this thread, but IMO they're overlooking something. If propeller ducting would produce the same results, why isn't it already being done?

The problem is the propellers are around $3000-5000 a piece. At that price, I would take the less efficient prop.

If the propeller ist 105% more efficient, then how come the fuel saving is only 20%? Could someone explain this? 100% more efficient means twice as good, which in turn means 50% less fuel. so, what's wrong with my maths?