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Thanks to Neil deGrasse Tyson for being cool and playing along:
Original Tweet in question:

Thanks to Brad Friesen:
Thanks to Gerry Friesen:


Watch all the Smarter Every Day videos about helicopters:

Tail Number CGYYW is a 2011 Robinson R44 II

The rotors can free wheel because of something called a “Sprag Clutch”.

You’ll note that I didn’t call out the stall region of the rotor system on this video. It’s the inner 20% of the rotor.

The graphical elements that are on page 1-46 and 1-47 of this manual were a huge help:

The type of aircraft int his video is an R-44
(If I did this right these should be working Amazon affiliate links to purchase the stuff I like to use. When people purchase from these links it will support Smarter Every Day.)

❓Mystery Item (just for fun):
Things I use and like:
📷Camera I use :
Favorite Lens:
On-camera Mic:
Lav Mic:
Hot shoe mount for Lav Receiver:
My Tripod:
My Multi-tool:
Favorite SD Card:
💾How I get footage off my phone:
Travel Tripod:
My Backpack:
My Headlamp:
Favorite Bidet:
World Map:
Favorite Shoes:
Everyone needs a snatchblock:
🥽Goggle Up! :

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Ambiance and musicy things by: A Shell In The Pit
Music” “Spins”
Gordon McGladdery did the outro music the video as well.

The thought is it my efforts making videos will help educate the world as a whole, and one day generate enough revenue to pay for my kids college education. If you appreciate what you’ve learned in this video and the effort that went in to it, please SHARE THE VIDEO!

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Warm Regards,


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