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MUSIC:
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Thanks to Neil deGrasse Tyson for being cool and playing along: https://twitter.com/neiltyson
Original Tweet in question:
https://twitter.com/neiltyson/status/623117641507557376

Thanks to Brad Friesen: https://goo.gl/bbUxuR
Thanks to Gerry Friesen: http://www.bchelicopters.com/

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Watch all the Smarter Every Day videos about helicopters:
https://www.youtube.com/watch?list=PL6CECC2E56B68A2C3&v=Cg1CPmtZL4c

Tail Number CGYYW is a 2011 Robinson R44 II

The rotors can free wheel because of something called a "Sprag Clutch". https://en.wikipedia.org/wiki/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.

https://en.wikipedia.org/wiki/Autorotation

The graphical elements that are on page 1-46 and 1-47 of this manual were a huge help:
http://armypubs.army.mil/doctr....ine/DR_pubs/dr_a/pdf

The type of aircraft int his video is an R-44
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I'm "ilikerockets" on Snapchat.
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Ambiance and musicy things by: A Shell In The Pit
Music" "Spins" https://ashellinthepit.bandcam....p.com/track/spins-ac
Gordon McGladdery did the outro music the video as well.
http://ashellinthepit.bandcamp.com/

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,

Destin