This NEW Propeller Gave Us Insane Results! | Whisper Sling Prop Test

We heard you loud and clear in the Youtube comments—you all wanted to catch the pure sound of our latest Whisper plane, without the extra tunes added. Well, guess what? We're all ears! Here it is, straight-up Whisper audio goodness, no distractions included! Let's dive into the sound of soaring together! 🎵✈ youtube.com/shorts/MeLD_w3ZNwU?feature=share

Decibel meter would have been nice

My god. Came to hear the prop but all I hear is MUSIC!!!!

I am VINDICATED by this new propeller !! Some 20 years ago or so I designed a simple wooden prop with bent inward tips of about 15 degrees, it was about 9 or ten inches and I meant to buy the electric motors to test between it and a straight planar prop but I never got around to it, I believe I left it with my dad because I made a smaller one for me. I hope he still has it because MY house burned down and I lost almost everything I owned. I would have been happy with ten to fifteen percent improvement in thrust with a given amount of power, but your tests show about 25% more thrust and that makes me very happy. I am glad someone perfected this design and now it can be used with electric planes also to extend their range.... and I don't have to use my time to manufacture them because Mr. Catto is doing it better than I could have imagined and with a much larger knowledge base in the physics behind it.

In a video that is promoting noise reduction, the music is not helpful🤷🏼‍♂️

Please for the love of god and everything that is good in the world.... can you just leave the music out. Its cheap, its for teenagers, and its distracting.

I suggest a decibel meter in the cockpit, with old prop, and new.

Cut the music

Don’t do the music

A lot of good feelings about the success of the prop but very few facts to support that. How many decibels quieter? What was the speed difference? Climb difference? How much does it weigh? I think the NR prop has better static trust with an 80hp. Maybe altitude? The prop looks amazing, it would be nice to know if outperforms other props. Thank you for the video.

I always like to see new tech, but with a prop... there is a lot more than just static thrust. Did the climbout change? Did the cruise speed change? Did the fuel consumption change? And, since the vid is about a "Quiet" prop.... you should have had a Db meter inside, and outside the plane.

IF YOU WANT US TO HEAR THE PROP NO MUSIC !!!!!!!!!

Wow. Those blades are so clearly inspired by Ludwig Prandtl's second formulae and the bell curve lift distribution. All to reduce tip vorticies.

I would like to have heard a low flyover with the old prop and then with the new prop. Cool design...wish you much success.

Ground testing is fun to see, but the airflow during flight is obviously very different. Optimal pitch increases with air speed. With the same throttle position, 5500rpm on the ground is going to result in much higher rpm in flight.

The military could use this technology on there tail rotors to cut the noise. That's where the most prop noise comes from on a standard design helicopter.

It's great to see you guys encouraging sound reduction. There are industry-standard sound tests you can run - that would be very helpful to share as well.

That is a very quiet propeller! Well done to Mr. Catto.

I've been looking into quieter drone propellers. There are some interesting designs out there that move the blade tip vortex out of phase between the blades.

Have you guys considered testing toroidal props? They seem to be outstanding. You should've had a decibel meter to determine the amount of the sound difference.