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American WWII's aircraft
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Sikorsky R-5 / HO2S-1 / HO3S
The second helicopter designed by Igor Sikorsky for the military was the two-seat R-5. Various versions were developed, with about 65 examples total being produced for the USAAF, U.S. Navy, and U.S. Coast Guard. The first two examples tested by the Navy were designated HO2S-1, while the remainder of the Navy/Coast Guard R-5 derivations were called the HO3S-1. A four-seat version known as the S-51 was produced for the civilian markets, and many of these were used by the U.S. armed forces as well.
| General characteristics R-5B | |||
| Primary function | Two/four-seat rescue helicopter | ||
| Powerplant | One Pratt & Whitney R-985-AN-5 radial engine | ||
| Thrust | 450 HP | 336 kW | |
| Length | 57 ft 1 in | 17.40 m | |
| Height | 13 ft | 3.96 m | |
| Weight | empty | 3,780 lb | 1,715 kg |
| max. | 4,825 lb | 2,189 kg | |
| Speed | cruising | 85 mph | 137 km/h |
| max. | 106 mph | 171 km/h | |
| Ceiling | 14,400 ft | 4,390 m | |
| Range | 360 miles | 579 km | |
| Armament | None | ||
| Crew | Two | ||
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Source: David Hanson´s American Aircraft of World War II
Jirka Wagner
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Last updated 01.10.2008