Born: Russia
Primarily active in: Russia

Alexander S. Yakovlev (1906-1989) was a famed fighter aircraft designer during World War I. His first helicopter was the coaxial Yak-M11FR-1, the name coming from the 140 hp M-11FR-1 engine. It was also referred to as the Yak-EG (Eksperimentalnyi Gelikopter). The helicopter was tested in 1947-48, but it was decided that the coaxial rotor layout should be developed by the Kamov bureau. Yakovlev built a single-main helicopter (Yak-100) and a tandem (Yak-24), with as many as 100 built

 

 Source: 2013 AHS Calendar