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Sikorsky CH-53 Sea Stallion / S-65 helicopter

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Specifications Comment this helicopter
Picture CH-53_Sea_Stallion__S-65
General
Manufacturer Sikorsky
Type CH-53 Sea Stallion / S-65
Introduced 3/1/1966
In production? No
Units produced 737
Price US $ 25,000,000.00
Dimensions
Overall Length 88.2 ft
Length 67.2 ft
Height 24.9 ft
Width 8.8 ft
   
   
Description

The CH-53 Sea Stallion (aka S-65) family of helicopters used for heavy-lift missions. It is made by the Sikorsky helicopter company of America.

The S-65 first took flight in 1964 in the form of the YCH-53 prototype. The initial project started in 1960 when the US marine corps began asking for a replacement for the current generation of piston-powered helicopters in heavy lift roles. It was in 1962, after messing around with tiltrotor designs for two years, that the USMC issued a request for a heavy lift helicopter.

Various proposals from several manufacturers were submitted. In the case of the Sikorsky what was proposed amounted to a scaled up version of the existing S-61R. Competition was intense, but in the end Sikorsky beat the likes of Boeing Vertol and Kaman Aircraft.

Side-by-side the S-65 and S-61R “Jolly Green Giant” have quite a few similarities. Which is understandable given that the S-65 derives from it. Although the fuselage is watertight, it was not explicitly designed for amphibious use.

The flight controls consist of a mechanical system backed up by no fewer than three independent hydraulic systems.

Unlike civilian craft the Sea Stallion is armor plated to protect the crew, of which there are four. It can carry a load of 38 troops, an 8000 pound internal load or a 13 000 pound external load.

All of this is made possible by two GE T64-6 turboshaft engines with 2850 shaft horsepower each. These drive a six-blade main rotor. The “D” variant increases the engine power to 3925 shaft horse power per engine by making use of the GE T64-413 engines.

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Design features
  • Rear loading ramp
  • Watertight fuselage
  • Three independent hydraulic systems
  • Rotor and transmission system developed from S-64 Skycrane
  • Tricycle, retractable, landing gear
  • All metal, semi-monocoque, fuselage structure
Description

The CH-53 Sea Stallion (aka S-65) family of helicopters used for heavy-lift missions. It is made by the Sikorsky helicopter company of America.

The S-65 first took flight in 1964 in the form of the YCH-53 prototype. The initial project started in 1960 when the US marine corps began asking for a replacement for the current generation of piston-powered helicopters in heavy lift roles. It was in 1962, after messing around with tiltrotor designs for two years, that the USMC issued a request for a heavy lift helicopter.

Various proposals from several manufacturers were submitted. In the case of the Sikorsky what was proposed amounted to a scaled up version of the existing S-61R. Competition was intense, but in the end Sikorsky beat the likes of Boeing Vertol and Kaman Aircraft.

Side-by-side the S-65 and S-61R “Jolly Green Giant” have quite a few similarities. Which is understandable given that the S-65 derives from it. Although the fuselage is watertight, it was not explicitly designed for amphibious use.

The flight controls consist of a mechanical system backed up by no fewer than three independent hydraulic systems.

Unlike civilian craft the Sea Stallion is armor plated to protect the crew, of which there are four. It can carry a load of 38 troops, an 8000 pound internal load or a 13 000 pound external load.

All of this is made possible by two GE T64-6 turboshaft engines with 2850 shaft horsepower each. These drive a six-blade main rotor. The “D” variant increases the engine power to 3925 shaft horse power per engine by making use of the GE T64-413 engines.

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Design features:
  • Rear loading ramp
  • Watertight fuselage
  • Three independent hydraulic systems
  • Rotor and transmission system developed from S-64 Skycrane
  • Tricycle, retractable, landing gear
  • All metal, semi-monocoque, fuselage structure
Performance
Persons 39
Max. Range 223 mi
Cruise Speed 173 mph
Max. Speed 183 mph
Max. rate of Climb 1440 ft/min
HOGE ceiling 0 ft
Service Ceiling 18500 ft
Gross Weight 42000 lb
Empty Weigt 27888 lb
Useful Load 14112 lb
Dynamic system
Fuel Capacity 0 gallons
Number of Engines 2
Engine Type Turbine
Engine Code General Electric T64-GE-7
Horse Power 3876
Rotorhead Fully articulated
Number of rotorblades 6
Rotor Diameter 72.2 ft
Number of tail rotorblades 4
Tailrotor Diameter 20 ft
Blueprints & model
Manufacturer Website manufacturer..
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2 Comments

ItemInfoText
1  AeroTurtle

Saturday, June 13, 2015 2:13 AM

Why does this say that the CH-53 is not in production?
2  helistartgz

Thursday, July 9, 2015 5:56 PM

Because, to my knowledge, it is not being produced anymore. The S-80E / CH-53E Super Stallion is, however.

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