Testing MIT's Toroidal Drone Propeller Design & Sound #shorts

Want to know how well MIT's Toroidal Drone Propeller performs. In this video we test the drone propeller design by MIT for educational purposes. How good is MIT's drone propeller? Does the Toroidal design sound any different?

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[vangoghsseveredear]

"These are supposed to be quieter"
*jet engine drone roars to life*

[TS]

If I recall correctly, their focus was on blade tip vortices and reducing the noise they generate. So to me the prop and all of its surfaces would have to be aerodynamically flawless, especially the blades edges and I think that is beyond the ability of a desktop 3d printer unless you intend to manually sand, shape and balance the blade to perfection during post processing. The nail polish would work to fill in the ridges, but you would need to dip the entire blade to achieve uniform cover and retain balance - the nail polish would also need to be self-leveling to fill in the ridges and provide a smooth surface and minimize sanding, balancing, and weight balance across all 4 rotors - when you're spinning that fast anything and everthing you can imagine will have a huge impact. They all work together to minimize noise while improving performance and efficiency, but the margin of error is very small.

[addledhead]

Proof that design spec doesn't matter if your manufacturing process can't deliver the required precision.

[Enkidouh]

“It’s supposed to be quieter than traditional propellers”
Cue category 5 hurricane

[Error-]

The design isn't the flaw here. It's the materials and manufacturing.

[Warrior.]

Idk why but I cracked up laughing with how he’s like “it should be quieter” and then when he starts to fly it it’s the loudest drone I have ever heard

[fuqnzht]

normal propeller: small handheld drill noises
toroidal propeller: plays Flight of the Bumblebee

[robinterheide]

Would be interesting to see a comparison against 3D printed regular props

[vexed]

Its not quieter, but if you’re trying to scare someone away and they happen to fear bees…

[bergfpv]

They sound about twice as loud. You should try ones printed on a resin 3D printer. They would be much smoother. I think it's the ridges that cause the noise.

[DaveOganesyan]

From a practical standpoint I will strongly recommend using a coating spray, even a clear one as opposed to nail polish because you will be able to achieve a thinner and more even coating that will have less impact on the balance of the propeller, lack of good balance on the blades may cause vibrations which in turn will cause more noise, reduce the aircraft's stability and potentially break the propeller over time because of the uneven load created on the blades.

[Nothingness]

"These are supposed to be quieter"

Drone: *sounds like a swarm of Bees*

[Abdega]

Instead of sounding like a drone, it now sounds like a bunch of *_angry bees_*

[cas]

bro got trolled into putting a loudener onto his drone
edit: no edit

[gurabirierosanopara]

I was not expecting to BURST OUT laughing

[channaSC]

Watching with excitement and anticipation, waiting to hear how much quieter these fancy new propellers

[esolbdivad]

Ah yes the final nail polish coating. The ultimate finish

[acardenasjr]

On the upside, an Angry Bee sound maker sounds like a Lawn prop

[hdudhehdhd]

This is one of my favorite episodes in the show. Finally having a conversation after all these seasons is exactly what i wanted to see, and the way everything went down was perfect

[mushromboeinvading]

FYI to anyone who's actually questioning if its quieter, just remember that the regular propeller was made of different material and designed for the drone, while the new style was 3D printed and is far from the perfect smooth blade it would normally be