- counterrotating propeller
- \\| ̷ ̷ ̷ ̷+...-\ noun
Etymology: counter- + rotating
Useful english dictionary. 2012.
Useful english dictionary. 2012.
Oszkár Asboth — Asboth Oszkár (March 31, 1891 in Ponkota (now Romania) February 27, 1960 in Budapest) was a Hungarian aviation engineer often credited with the invention of the helicopter. His machine used stacked counterrotating propellers; Asboth never solved… … Wikipedia
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