What Happened to the Toroidal Propeller?

In 2017, an MIT research team made a discovery that would change the fate of the aviation industry forever. They had found a propeller that was less noisy and more efficient. Soon, word got out that this propeller was not just noiseless but also better than the traditional propellers we had. They called it the Toroidal propeller, and it was supposed to be revolutionary. What happened to it?
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[@MrJlcurl]

Sharrow was showing propellers like publicly in 2019, and testing long before this, long before the MIT "discovery".

[@Ma_nerd]

Thus sounds more of a sales pitch

[@Talon19]

They are currently more expensive to buy.

[@MultiSerge1980]

Will this type of Propeller be used on Naval Warships, like Carriers, and the new Frigates and Destroyers?

[@dc-4ever201]

I know that some cargo vessels belonging to the massive shipping companies are testing them as I saw a video a while back with one being fitted to a Maersk vessel during major refit. So once it's been verified that they are worth the hassle and prove their efficiency they'll probably be used everywhere. I expect DARPA are sciencing the he'll outta them to find the best type for each vessel or aircraft.

[@Jagdtyger2A]

It would be interesting to see how wel the old Chinook helicopter would perform wt Toroidsl rotord

[@33rdframe]

None of this is accurate. I did a video extensively looking into the patents and testing the actual propellers and it's all garbage

[@JungLeeTheDoctor]

the drone propellers don't mitigate much sound

[@elfeiin]

So what happened to it? Did the industry go with it? It'd be nice to have the title question answered.

[@sqlevolicious]

Expensive to manufacture and produce.

[@1FishinAddict]

Won’t go anywhere due to price gauging

[@flstateuguy83]

Neat commercial. You may want to add a skip button though. 15 minutes is a bit long for an ad.

[@georgedoolittle9015]

Not used much for marine use as any repair to a damaged prop crazy expensive for this type. Is a huge deal in the market for drones tho especially with a massive War raging away in Europe and the need for every advantage in range, speed, stealth and lift is an absolute necessity so yes very much a huge matter suddenly now November, 2024 as the #drone_wars #ducted_propellers there is also #scimitar_propellers 😊😊

[@kevinbissett293]

So what is the failing points of the Toroidal Propeller? You haven't really addressed those points. I'm sure there are draw backs but exactly where?

[@sqlevolicious]

There are no failing points or draw backs compared to traditional props. It's a more efficient prop that can provide lower volume when it comes to high frequency noise, but also provide more thrust at higher RPMs (due to lower friction and better efficiency).
The biggest problem is the material and construction. People that are 3d printing them or doing molds, and doing tests, are often failing due to the scaling issue with more malleable materials. These props need to be made with very expensive manufacturing techniques and materials that are not available to the public.
MIT has a great writeup on it, and these backyard "engineers" are too dumb to understand any of the contextual math and physics.

[@AustinMCraigDoesNeatStuff]

This was scripted and voiced by AI, right? Was it edited by AI too?

[@DrMJT]

I Actually Looked at buying Toroidal Propellors for my boats (pre-covid)... I took one look at the Price and said "HARD PASS".
They shot themselves in the foot by pricing a single propellor at more than the price of entire leisure boat, motor, and fixtures and fittings.
You totally skipped over the mid to High five digit price per propellor! To have captured the market, they should have been a minimum of 50% or more less than the price of the old cavitating types...

[@cantinadudes]

Maybe they're still an option for 3d printed drone propellers

[@douglachman7330]

When will submarines upgrade to this technology?

[@sqlevolicious]

They have been using this technology for almost a decade.

[@EGGHEADJANEK]

Stoping kids from saying first

[@verttikoo2052]

😡

[@jamillefrancisco564]

No one says first anymore

[@neandertalac]

Who would make these?! They aren't easy for industrial production.

[@russellstyles5381]

So, bottom line, as always - we need to wait for patent to expire before we can get one. Same story as always.

[@verttikoo2052]

Those flying taxis will never happen btw 🙄