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American WWII's aircraft


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

Source: David Hanson´s American Aircraft of World War II

Jirka Wagner


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