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Sikorsky H-34 Choctaw / S-58 helicopter

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Specifications Comment this helicopter
Picture H-34_Choctaw__S-58
General
Manufacturer Sikorsky
Type H-34 Choctaw / S-58
Introduced 9/1/1954
In production? No
Units produced 2108
Price US $ 0.00
Dimensions
Overall Length 56.7 ft
Length 46.8 ft
Height 15.9 ft
Width 0 ft
   
   
Description

The S-58 (aka H-34 Choctaw) is a military helicopter produced by the Sikorsky helicopter company that first flew on March 8 1945.

The S-58 was conceived, designed and produced as an anti-submarine helicopter. It’s essentially a longer and more powerful version of the S-55, upon which it was based.

The nose is similar to that model, but the tail-dragger rear fuselage and landing gear make it impossible to confuse it with the S-55’s high tail, four post pattern.

The S-58 represents the last of the piston-powered military helicopters which were replaced by turbine helicopters such as the UH-1 Huey and CH-46 Sea Knight.

The engine (there is only one) in question here is the Wright R-1820-84 Cyclone. This radial piston engine provided 1525 horsepower which gave the S58 a maximum speed of 138 miles per hour and a range of 280 miles.

The S-58 had a role in several theaters of war. It was active in the Algerian and Vietnam wars. The US armed forces continued to use the S-58 into the late 1960s. By the early 1970s the armed forces had terminated the service of all S-58/H-34 helicopters.

In total, 1868 of these helicopters were produced with at least 22 operators worldwide. It was also put into use by the United States Army, Navy and Marines.

About 50 variants of this helicopter exists. While production of the S-58 ran between 1954-1970 it is still in civilian use today. Production under license also continued after Sikorsky stopped making the S-58.

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Design features
  • Nose-mounted engine
  • Semi-monocoque structure fuselage
  • Three wheel, non retractable, landing gear
  • All metal main and tail rotors
Description

The S-58 (aka H-34 Choctaw) is a military helicopter produced by the Sikorsky helicopter company that first flew on March 8 1945.

The S-58 was conceived, designed and produced as an anti-submarine helicopter. It’s essentially a longer and more powerful version of the S-55, upon which it was based.

The nose is similar to that model, but the tail-dragger rear fuselage and landing gear make it impossible to confuse it with the S-55’s high tail, four post pattern.

The S-58 represents the last of the piston-powered military helicopters which were replaced by turbine helicopters such as the UH-1 Huey and CH-46 Sea Knight.

The engine (there is only one) in question here is the Wright R-1820-84 Cyclone. This radial piston engine provided 1525 horsepower which gave the S58 a maximum speed of 138 miles per hour and a range of 280 miles.

The S-58 had a role in several theaters of war. It was active in the Algerian and Vietnam wars. The US armed forces continued to use the S-58 into the late 1960s. By the early 1970s the armed forces had terminated the service of all S-58/H-34 helicopters.

In total, 1868 of these helicopters were produced with at least 22 operators worldwide. It was also put into use by the United States Army, Navy and Marines.

About 50 variants of this helicopter exists. While production of the S-58 ran between 1954-1970 it is still in civilian use today. Production under license also continued after Sikorsky stopped making the S-58.

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Design features:
  • Nose-mounted engine
  • Semi-monocoque structure fuselage
  • Three wheel, non retractable, landing gear
  • All metal main and tail rotors
Performance
Persons 18
Max. Range 280 mi
Cruise Speed 98 mph
Max. Speed 123 mph
Max. rate of Climb 1100 ft/min
HOGE ceiling 0 ft
Service Ceiling 9500 ft
Gross Weight 14000 lb
Empty Weigt 7900 lb
Useful Load 6100 lb
Dynamic system
Fuel Capacity 185 gallons
Number of Engines 1
Engine Type Piston
Engine Code Wright R-1820-84 Cyclone
Horse Power 1529
Rotorhead Fully articulated
Number of rotorblades 4
Rotor Diameter 56 ft
Number of tail rotorblades 4
Tailrotor Diameter 9.5 ft
Blueprints & model
Manufacturer Website manufacturer..
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2 Comments

ItemInfoText
1  Edward T Egan

Monday, January 21, 2019 4:49 AM

Your text above, "The S-58 (aka H-34 Choctaw) is a military helicopter produced by the Sikorsky helicopter company that first flew on March 8 1945"

You transposed numbers: it's 1954, not 1945.
2  Helistart

Friday, February 15, 2019 4:01 PM

Thanks. I will have it changed.

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