Why is this Propeller Getting So Much Attention?

Why is this Propeller Getting So Much Attention? Get an exclusive Surfshark deal! Enter promo code UNDECIDED for an extra 3 months free at By changing the shape of a propeller design, we may have found a way to make drones (and a lot of other things that use propellers) not just quieter, but way more efficient. For some boating applications, the energy efficiency was boosted from 20% - 105%! Can this toroidal propeller really help everything from quieting tiny drones to helping boats sail further with less fossil fuels? And if just changing the propeller shape makes such a big impact, why haven’t we tried something like this sooner? Watch Why NASA’s New 3D Printed Rocket Engine Matters Video script and citations: Get my achieve energy security with solar guide: Follow-up podcast: Video version - Audio version - Join the Undecided Discord server: 👋 Support Undecided on Patreon! ⚙️ Gear & Products I Like Great sustainable products for your home: Visit my Energysage Portal: Research solar panels and get quotes for free! Or find community solar near you: For a curated solar buying experience EnergyPal’s free personalized quotes: Tesla Referral Code: Get 1,000 free supercharging miles or a discount on Tesla Solar & Powerwalls 👉 Follow Me Mastodon @mattferrell Twitter Instagram Facebook Website 📺 YouTube Tools I Recommend Audio file(s) provided by Epidemic Sound TubeBuddy VidIQ I may earn a small commission for my endorsement or recommendation to products or services linked above, but I wouldn’t put them here if I didn’t like them. Your purchase helps support the channel and the videos I produce. Thank you.