Stanley Hiller Jr. built the first American helicopter west of the Mississippi in 1944 when he was only 18 years old. The XH-44 Hiller-copter used a co-axial rotor system, which never found any production success outside of Russia. This replica is seen here on display on Jan. 28, 2022 when VFS organized an eVTOL air taxi display at the Hiller Aviation Museum at San Carlos Airport, CA. (VFS staff photo taken Jan 28, 2022. CC-BY-SA 4.0)
License: Creative Commons Attribution-ShareAlike
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