Developed in 1949, there are two versions, both of which have several designations.  Powered the the P&W R-1340-57 powerplant, designations include: 

 

  • HO4S-1 & 2 under the U.S. Navy
  • HO4S-2G under the U.S. Coast Guard
  • HRS-2 & under the U.S. Marine Corps
  • H-19A under the U.S. Air Force

 

There is also the H-19B (HRS-3) version, powered by the Wright R-1300-3 engine.

Overview

Data on design, manufacture and status

Configuration

Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift configuration: Single main rotor

Dedicated control device: Tail rotor

Crew required: 1-2

Crew seating: Side-by-side

Landing gear: Wheels (non-retractable)

Overall Dimensions

Data on aircraft size

Overall Height: 4.07 m (13.4 ft)

Overall Length: 18.99 m (62.3 ft)

Overall Width: 16.15 m (53.0 ft)

Engine Details

Aircraft powerplant (lift and/or propulsion)

Total number of engines: 1

Engine designation: P&W R-1340-57 reciprocating

Engine manufacturer: Pratt & Whitney

Weights and Performance

Data on aircraft weight and flight characteristics

Max Gross Weight (ground): 3266 kg (7200 lb)

Max Range: 652 km (352 nm)

Related VFS Resources

Resources related to the S-55/HO4S-1/HO4S-2/HRS-2/HRS-3 , provided by the Vertical Flight Society.
Forum Proceedings
 
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Web files from vtol.org
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Webpages from vtol.org
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Related Public Resources

Resources related to the S-55/HO4S-1/HO4S-2/HRS-2/HRS-3 , provided by public sources across the internet.

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