By the glossary definition, with a Useful Load of 22766 lb (10327 kg), the calculated Empty Weight is approximately 8724 kg.

Overview

Data on design, manufacture and status

Design authority: Sikorsky Aircraft Corp.

Primary manufacturer: Sikorsky Aircraft Corp.

Parent type: Sikorsky S-64/H-54

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 (non-retractable)

Layout and Dimensions

Data on aircraft size

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 and Performance

Data on aircraft weight and flight characteristics

Weights
Max Gross Weight (ground):  
Max Gross Weight (airborne):  
Max Take-off Weight: 19,051 kg 42,000 lb
Empty Weight: 8,724 kg 19,234 lb
Useful Load: 10,327 kg 22,766 lb
Empty Weight Fraction: 0.458
Climb Performance
Max Rate of Climb:  
Hover Performance
Hover Ceiling IGE:  
Hover Ceiling OGE:  
Limitations
Max Level Flight Speed: 204 km/h 110 kts
Never Exceed Speed:  
Service Ceiling:  
Range and Endurance
Max Range: 407 km 220 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: P&W JFTD12A-3 turbine
Manufacturer: Pratt & Whitney
Normal Ratings
Max continuous:  
Take-off / rated: 3021 kW 4050 hp
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

This rotor was specific to the S-64F due to the blade chord and twist

Main Rotor Characteristics
Diameter: 21.95 m 72.00 ft
RPM: 185.0 rpm 185.0 rpm
Direction of Rotation: Counterclockwise
Hub Type: Fully articulated in lag and flap
Main Rotor Blade Characteristics
Blade Construction: Titanium upper and lower stars, steel lead/lag and flap hinges
Blade Chord: 0.661 m 2.17 ft
Blade Tip Geometry: Conventional
Blade Twist: -0.244 rad -14.000 deg
Number of Blades: 6
Main Rotor Derived Characteristics
Disc Area: 378.25 m² 4071.6 ft²
Disc Loading:  
Solidity: 0.1150
Main Rotor Blade Derived Characteristics
Blade area per blade: 7.25 m² 78.0 ft²
Tip Speed: 212.58 m/s 697.4 fps

Primary Control Device

Data on primary control devices such as tail rotors

Tail Rotor Characteristics
Diameter: 4.88 m 16.00 ft
Configuration: Pusher
Direction of Rotation: Top blade aft
RPM: 850 rpm 850 rpm
Tail Rotor Blade Characteristics
Number of Blades: 4
Blade Construction: steel rotor hub with aluminum rotor blades
Blade Chord: 0.390 m 1.28 ft
Blade Twist:  
Tail Rotor Derived Characteristics
Disc Area: 18.68 m² 201.1 ft²
Solidity: 0.2037
Tail Rotor Blade Derived Characteristics
Tip Speed: 217.05 m/s 712.1 fps
Blade Area (per blade): 0.951 m² 10.24 ft²

Related VFS Resources

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Related Public Resources

Resources related to the YCH-54A (S-64A) Tarhe, provided by public sources across the internet.

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