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Sikorsky S-76 A helicopter

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Specifications Comment this helicopter
Picture S-76A
General
Manufacturer Sikorsky
Type S-76 A
Introduced 5/13/1977
In production? No
Units produced 300
Price US $ 11,000,000.00
Dimensions
Overall Length 52.5 ft
Length 43.4 ft
Height 14.5 ft
Width 0 ft
   
   
Description

The S-76A is a variant of the S-76 medium commercial utility helicopter manufactured by the Sikorsky helicopter company of America.

The S-67 actually began life in the 70s as the S-74. The helicopter was conceived of as a vehicle for corporate transport and oil industry use. It’s notable for being the first purely civilian Sikorsky aircraft, although two military variants were eventually created.

Interestingly one experimental S-76 airframe was used to test an early version of the cockpit intended for the RAH-66 Commanche.

The first prototype flew in 1977 and the first customer delivery took place the following year.

The S-76A was the first production model and is of conventional design, with a four-blade main rotor and tail rotor.

The S-67A is powered by two 650 shaft horse power Rolls Royce 250-C30 turboshaft engines. Subsequent versions would push that figure closer to 1000 shaft horse power, significantly increasing performance.

The fuselage of the S-76A is made of mixed metals and composite material with a fiberglass nose. The cabin also has a light alloy honeycomb structure.

This lightweight construction and strong engine power allows the S-76A to transport a crew of two plus another 12 passengers in three rows of four in the cabin. A more luxurious executive option cuts this down to between four and eight.

The most advanced variant, the S-76C+ ceased production in 2005. Across all variants about 1090 units were produces and the S-76 remains in service to this day.

At least thirteen nations operate S-76 helicopters in military or state service. Civilian use is widespread globally and the largest civilian fleet consists of 79 S-76 units operated by CHC Helicopter Corporation.

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Design features
  • Retractable, tricycle, landing gear
  • Semi-monocoque tailboom
  • Fiberglass nose
  • Light alloy honeycomb cabin structure
  • Servo-assisted flight controls
Description

The S-76A is a variant of the S-76 medium commercial utility helicopter manufactured by the Sikorsky helicopter company of America.

The S-67 actually began life in the 70s as the S-74. The helicopter was conceived of as a vehicle for corporate transport and oil industry use. It’s notable for being the first purely civilian Sikorsky aircraft, although two military variants were eventually created.

Interestingly one experimental S-76 airframe was used to test an early version of the cockpit intended for the RAH-66 Commanche.

The first prototype flew in 1977 and the first customer delivery took place the following year.

The S-76A was the first production model and is of conventional design, with a four-blade main rotor and tail rotor.

The S-67A is powered by two 650 shaft horse power Rolls Royce 250-C30 turboshaft engines. Subsequent versions would push that figure closer to 1000 shaft horse power, significantly increasing performance.

The fuselage of the S-76A is made of mixed metals and composite material with a fiberglass nose. The cabin also has a light alloy honeycomb structure.

This lightweight construction and strong engine power allows the S-76A to transport a crew of two plus another 12 passengers in three rows of four in the cabin. A more luxurious executive option cuts this down to between four and eight.

The most advanced variant, the S-76C+ ceased production in 2005. Across all variants about 1090 units were produces and the S-76 remains in service to this day.

At least thirteen nations operate S-76 helicopters in military or state service. Civilian use is widespread globally and the largest civilian fleet consists of 79 S-76 units operated by CHC Helicopter Corporation.

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Design features:
  • Retractable, tricycle, landing gear
  • Semi-monocoque tailboom
  • Fiberglass nose
  • Light alloy honeycomb cabin structure
  • Servo-assisted flight controls
Performance
Persons 14
Max. Range 465 mi
Cruise Speed 178 mph
Max. Speed 178 mph
Max. rate of Climb 1350 ft/min
HOGE ceiling 1800 ft
Service Ceiling 15000 ft
Gross Weight 10500 lb
Empty Weigt 7132 lb
Useful Load 3368 lb
Dynamic system
Fuel Capacity 272 gallons
Number of Engines 2
Engine Type Turbine
Engine Code Allison 250-C30S
Horse Power 650
Rotorhead Articulated, elastomeric blade retention bearings
Number of rotorblades 4
Rotor Diameter 44 ft
Number of tail rotorblades 4
Tailrotor Diameter 8 ft
Blueprints & model
Manufacturer Website manufacturer..
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