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Handicapped by a heavy 80-hp engine, this early coaxial helicopter built by Emile Berliner along with J. Newton Williams, lifted its own weight into the air in 1908.

Handicapped by a heavy 80-hp engine, this early coaxial helicopter built by Emile Berliner along with J. Newton Williams, lifted its own weight into the air in 1908. This helicopter used skid landing gear. Emile's son, Henry, later designed another craft that flew with some success carrying a pilot in 1924.

Credits - Hiller Aviation Museum