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1940s Single-Rotor Helicopters
View all Single-Rotor Helicopters
1940s
1950s
1960s
1970s
1980s
1990s
2000s
2010s
2020s
Sikorsky R-4
United States
1940s
Bell H-13 Sioux
United States
1940s
Mil Mi-1
Soviet Union
1940s
Sikorsky R-6
United States
1940s
Bell H-12
United States
1940s
Saunders-Roe Skeeter
United Kingdom
1940s
Bell XH-15
United States
1940s
