Military version of the S-55 for operational evaluation by the USAF

Overview

Data on design, manufacture and status

Design authority: Sikorsky Aircraft Corp.

Primary manufacturer: Sikorsky Aircraft Corp.

Parent type: Sikorsky S-55/H-19

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: TBA

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: 13.99 m 45.9 ft
Airframe Width: 3.53 m 11.6 ft
Airframe Height: 4.06 m 13.3 ft
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:  
Empty Weight: 2,192 kg 4,833 lb
Useful Load:  
Empty Weight Fraction:  
Climb Performance
Max Rate of Climb:  
Hover Performance
Hover Ceiling IGE:  
Hover Ceiling OGE:  
Limitations
Max Level Flight Speed:  
Never Exceed Speed:  
Service Ceiling:  
Range and Endurance
Max Range:  
Max Endurance:  

Engine Details

Aircraft powerplant (lift and/or propulsion)

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

Powerplant
Number of engines: 1
Designation: P&W R-1340-AN-1 reciprocating
Manufacturer: Pratt & Whitney
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

Main Rotor Characteristics
Diameter: 16.15 m 52.99 ft
RPM:  
Direction of Rotation: Unknown
Hub Type:
Main Rotor Blade Characteristics
Blade Construction:
Blade Chord: 0.416 m 1.37 ft
Blade Tip Geometry:
Blade Twist: -0.140 rad -7.998 deg
Number of Blades: 3
Main Rotor Derived Characteristics
Disc Area: 204.85 m² 2205.1 ft²
Disc Loading:  
Solidity: 0.0492
Main Rotor Blade Derived Characteristics
Blade area per blade: 3.36 m² 36.2 ft²
Tip Speed:  

Primary Control Device

Data on primary control devices such as tail rotors

Tail Rotor Characteristics
Diameter: 2.67 m 8.75 ft
Configuration: Unknown
Direction of Rotation: Unknown
RPM:  
Tail Rotor Blade Characteristics
Number of Blades: 2
Blade Construction:  
Blade Chord: 0.168 m 0.55 ft
Blade Twist:  
Tail Rotor Derived Characteristics
Disc Area: 5.59 m² 60.1 ft²
Solidity: 0.0802
Tail Rotor Blade Derived Characteristics
Tip Speed:  
Blade Area (per blade): 0.224 m² 2.41 ft²

Related VFS Resources

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Related Public Resources

Resources related to the YH-19 , provided by public sources across the internet.

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