Developed in 1961 as the commercial airline variant of the S-61 with a passenger capacity of either 28 or 25 with galley and toilet.  The aircraft can be fitted with removable baggage pods and airstairs.

Overview

Data on design, manufacture and status

Design authority: Sikorsky Aircraft Division, United Aircraft and Transport Corporation

Primary manufacturer: Sikorsky Aircraft Division, United Aircraft and Transport Corporation

Parent type: No type defined

Aircraft status: No longer flying

Configuration

Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift configuration: Single main rotor

Dedicated control device: Tail rotor

Crew required: 2

Crew seating: Side-by-side

Landing gear: Wheels (all retractable)

Layout and Dimensions

Data on aircraft size

50 inches longer than the original S-61.

Overall Dimensions
Overall Height: 5.08 m 16.7 ft
Overall Length: 22.16 m 72.7 ft
Overall Width: 18.90 m 62.0 ft
Airframe Dimensions
Airframe Length: 17.96 m 58.9 ft
Airframe Width: 4.78 m 15.7 ft
Airframe Height: 4.67 m 15.3 ft
Landing Gear Dimensions
Landing Gear Base: 7.15 m 23.5 ft
Landing Gear Track: 3.96 m 13.0 ft
Cabin Dimensions
Cabin Internal Height:  
Cabin Internal Length:  
Cabin Internal Width:  

Weights and Performance

Data on aircraft weight and flight characteristics

Cruise Speed: 136 mph (218.871 km/h)

Weights
Max Gross Weight (ground): 8,618 kg 19,000 lb
Max Gross Weight (airborne):  
Max Take-off Weight: 8,618 kg 19,000 lb
Empty Weight: 4,653 kg 10,259 lb
Useful Load: 3,965 kg 8,741 lb
Empty Weight Fraction: 0.540
Climb Performance
Max Rate of Climb: 8 m/s 1,640 fpm
Hover Performance
Hover Ceiling IGE:  
Hover Ceiling OGE:  
Limitations
Max Level Flight Speed: 235 km/h 127 kts
Never Exceed Speed:  
Service Ceiling: 3,505 m 11,499 ft
Range and Endurance
Max Range: 444 km 240 nm
Max Endurance:  

Engine Details

Aircraft powerplant (lift and/or propulsion)

Provided powerplant data is for uninstalled, sea level, static operations.

Powerplant
Number of engines: 2
Designation: GE CT58-100-1 turbine
Manufacturer: General Electric Company
Normal Ratings
Max continuous:  
Take-off / rated:  
Intermediate:  
Maximum:  
OEI Ratings
OEI contingency:  
OEI continuous:  
OEI 30-second:  
OEI intermediate:  

Primary Lift Device

Data on primary lift devices such as main rotors

NACA 0012 airfoil

Main Rotor Characteristics
Diameter: 18.90 m 62.00 ft
RPM: 203.0 rpm 203.0 rpm
Direction of Rotation: Counterclockwise
Hub Type: Fully articulated
Main Rotor Blade Characteristics
Blade Construction:
Blade Chord: 0.464 m 1.52 ft
Blade Tip Geometry: Conventional
Blade Twist: -0.140 rad -8.000 deg
Number of Blades: 5
Main Rotor Derived Characteristics
Disc Area: 280.48 m² 3019.2 ft²
Disc Loading: 30.73 kg/m² 6.293 lb/ft²
Solidity: 0.0781
Main Rotor Blade Derived Characteristics
Blade area per blade: 4.38 m² 47.1 ft²
Tip Speed: 200.86 m/s 659.0 fps

Primary Control Device

Data on primary control devices such as tail rotors

Tail Rotor Characteristics
Diameter: 3.15 m 10.33 ft
Configuration: Pusher
Direction of Rotation: Top blade aft
RPM: 1244 rpm 1244 rpm
Tail Rotor Blade Characteristics
Number of Blades: 5
Blade Construction:  
Blade Chord: 0.187 m 0.61 ft
Blade Twist:  
Tail Rotor Derived Characteristics
Disc Area: 7.79 m² 83.9 ft²
Solidity: 0.1885
Tail Rotor Blade Derived Characteristics
Tip Speed: 205.15 m/s 673.1 fps
Blade Area (per blade): 0.294 m² 3.16 ft²

Related VFS Resources

Resources related to the S-61L , provided by the Vertical Flight Society.
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Related Public Resources

Resources related to the S-61L , provided by public sources across the internet.

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