How Was the Helicopter Invented?

How Was the Helicopter Invented? Join us today as we learn about how helicopters were invented and who did it. Sources https://science.howstuffworks.com/transport/flight/modern/helicopter8.htm https://www.nasa.gov/audience/forstudents/5-8/features/nasa-knows/what-is-a-helicopter-58.html Send us listener mail! Send an audio message: anchor.fm/inquisikids-daily/message Send an email: [email protected]