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1912 'helicopter' designed by German engineer, Otto Baumgaerte. It can rise without a start, remain...

IMAGE number
EVB2924089
Image title
1912 'helicopter' designed by German engineer, Otto Baumgaerte. It can rise without a start, remain motionless in the air a longer time, and be turned in desired direction. Two propellers, with six blades each, set upon the same axle. By means of the angles at which the rotors are set, they serve for raising and lowering purposes
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black and white photograph
Image description

1912 'helicopter' designed by German engineer, Otto Baumgaerte. It can rise without a start, remain motionless in the air a longer time, and be turned in desired direction. Two propellers, with six blades each, set upon the same axle. By means of the angles at which the rotors are set, they serve for raising and lowering purposes

Photo credit
CSU Archives/Everett Collection / Bridgeman Images
Image keywords
Germany / Europe / 1910s / 20th century / aircraft / Dresden / 20th century / aviation / technology / historical / propellers / rotors / experimental aircraft / 1910s / helicopter / engineering / pilot / aeronautics / history / rs5wn / Photograph / Photography / Mzphoto
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Largest available format 3000 × 2125 px 2 MB
Dimension [pixels] Dimension in 300dpi [mm] File size [MB]
Large 3000 × 2125 px 254 × 180 mm 1.7 MB
Medium 1024 × 726 px 87 × 61 mm 437 KB

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