Vertipedia - Sikorsky S-61A (SH-3A Sea King, CH-38)

By the glossary definition, with a Useful Load of 9870 lb (4477 kg), the calculated Empty Weight is approximately 4187 kg.

Overview

Data on design, manufacture and status

Latest or last design authority: Sikorsky Aircraft Corp.
Originally designed by Sikorsky Aircraft Division, United Aircraft and Transport Corporation

Latest or last primary manufacturer: Sikorsky Aircraft Corp.
Originally manufactured by Sikorsky Aircraft Division, United Aircraft and Transport Corporation

Parent type: Sikorsky S-61/H-3

Aircraft status: Operational

Configuration

Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift devices: 1 Single main rotor

Dedicated control device: 1 Tail rotor

Crew required: 2 in Side-by-side arrangement

Landing gear: Wheels (all retractable)

Key Characteristics

Data on key physical features

Aircraft Details

Data on aircraft configuration, weights, flight performance and equipment

Layout and Dimensions

Weights and Performance

Engine Details

Primary Lift Device

Primary Control Device

Overall Dimensions
Overall Height:
Overall Length:
Overall Width:

Airframe Dimensions
Airframe Length:
Airframe Width:
Airframe Height:

Landing Gear Dimensions
Landing Gear Base:
Landing Gear Track:

Cabin Dimensions
Cabin Internal Height:
Cabin Internal Length:
Cabin Internal Width:

Weights
Max Gross Weight (ground):	8,664 kg	19,100 lb
Max Gross Weight (airborne):
Max Take-off Weight:	8,664 kg	19,100 lb
Empty Weight:	4,187 kg	9,230 lb
Useful Load:	4,477 kg	9,870 lb
Empty Weight Fraction:	0.483

Climb Performance
Max Rate of Climb:

Hover Performance
Hover Ceiling IGE:
Hover Ceiling OGE:

Limitations
Max Level Flight Speed:	250 km/h	135 kts
Never Exceed Speed:
Service Ceiling:

Range and Endurance
Max Range:	837 km	452 nm
Max Endurance:

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

Powerplant
Number of engines:	2
Designation:	GE T58-GE-8B turbine
Manufacturer:	GE Aviation

Normal Ratings
Max continuous:
Take-off / rated:	933 kW	1250 hp
Intermediate:
Maximum:

OEI Ratings
OEI contingency:
OEI continuous:
OEI 30-second:
OEI intermediate:

NACA 0012 airfoil; RPM (S-72 RSRA): 209.09

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:	30.89 kg/m²	6.326 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

Tail Rotor Characteristics
Diameter:
Configuration:	Unknown
Direction of Rotation:	Unknown
RPM:

Tail Rotor Blade Characteristics
Number of Blades:	5
Blade Construction:
Blade Chord:
Blade Twist:

Tail Rotor Derived Characteristics
Disc Area:
Solidity:

Tail Rotor Blade Derived Characteristics
Tip Speed:
Blade Area (per blade):

Related VFS Resources

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Images

Overview

Attribution

Number of engines:	2 Turbines
Max Level Flight Speed:	250 km/h	135 kts
Max Range:	837 km	452 nm
Max Endurance:

Main Rotor Diameter:	18.90 m	62.00 ft
Max Gross Weight (ground):	8,664 kg	19,100 lb
Useful Load (calculated):	4,477 kg	9,870 lb