Mi-1 Hare vs R-4
| Soviet light utility helicopter, extensively used for civilian and military operations during the mid-20th century. | |
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| Origin country | 🇨🇳 Ex-USSR |
| Category | Military Helicopters |
| Manufacturer | Mil |
| First flight | 20 September 1948 |
| Year introduced | 1950 |
| Number produced | 2594 units |
| Average unit price | $0.1 million |
| American helicopter from the 1940s, first to be produced in quantity, used primarily in World War II for rescue operations. | |
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| Origin country | 🇺🇸 United States |
| Category | Military Helicopters |
| Manufacturer | Sikorsky |
| First flight | 13 January 1942 |
| Year introduced | 1944 |
| Number produced | 131 units |
| Average unit price | $0.0 million |
| Wingspan | 14.4 m â—‰ |
| Height | 3.3 m â—‰ |
| Length | 12.1 m â—‰ |
| Maximum speed | 185 km/h â—‰ |
| Operational range | 430 km â—‰ |
| Service ceiling | 3,500 m â—‰ |
| Max. takeoff weight | 2,330 kg â—‰ |
| Empty weight | 1,700 kg â—‰ |
| Total thrust | 1 x 423 kW â—‰ |
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| Wingspan | 11.6 m â—‰ |
| Height | 3.8 m â—‰ |
| Length | 10.8 m â—‰ |
| Maximum speed | 121 km/h â—‰ |
| Operational range | 370 km â—‰ |
| Service ceiling | 2,400 m â—‰ |
| Max. takeoff weight | 1,150 kg â—‰ |
| Empty weight | 950 kg â—‰ |
| Total thrust | 0 â—‰ |