With a 10-passenger capacity, the HRP-2 is a longitudinal tandem rotor transport helicopter with a semi-monocoque body.  It was a metal-skinned version of the HRP-1, with a visually different cockpit configuration. Developed in 1948. 5 were produced for the U.S. Coast Guard.

Overview

Data on design, manufacture and status

Design authority: Piasecki Helicopter Corporation

Primary manufacturer: Piasecki Helicopter Corporation

Parent type: No type defined

Aircraft status: No longer flying

Configuration

Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift configuration: Tandem (Fore/aft) (x2)

Crew required: 2

Crew seating: Side-by-side

Landing gear: Wheels (non-retractable)

Layout and Dimensions

Data on aircraft size

Overall Dimensions
Overall Height: 4.27 m 14.0 ft
Overall Length:  
Overall Width: 12.50 m 41.0 ft
Airframe Dimensions
Airframe Length: 16.46 m 54.0 ft
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

Cruise Speed: 136.794 km/h

Weights
Max Gross Weight (ground): 3,277 kg 7,225 lb
Max Gross Weight (airborne):  
Max Take-off Weight: 3,277 kg 7,225 lb
Empty Weight: 2,404 kg 5,301 lb
Useful Load: 873 kg 1,924 lb
Empty Weight Fraction: 0.734
Climb Performance
Max Rate of Climb: 5 m/s 900 fpm
Hover Performance
Hover Ceiling IGE:  
Hover Ceiling OGE:  
Limitations
Max Level Flight Speed:  
Never Exceed Speed:  
Service Ceiling: 3,048 m 10,000 ft
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: 12.50 m 41.00 ft
RPM:  
Direction of Rotation: Counter-rotating
Hub Type:
Main Rotor Blade Characteristics
Blade Construction:
Blade Chord:  
Blade Tip Geometry:
Blade Twist:  
Number of Blades: 3
Main Rotor Derived Characteristics
Disc Area: 122.66 m² 1320.3 ft²
Disc Loading: 13.36 kg/m² 2.736 lb/ft²
Solidity:  
Main Rotor Blade Derived Characteristics
Blade area per blade:  
Tip Speed:  

Primary Control Device

Data on primary control devices such as tail rotors

Tail Rotor Characteristics
Diameter:  
Configuration: Unknown
Direction of Rotation: Unknown
RPM:  
Tail Rotor Blade Characteristics
Number of Blades:  
Blade Construction: N/A
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

Resources related to the HRP-2 (Model PD-17) , provided by the Vertical Flight Society.
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Related Public Resources

Resources related to the HRP-2 (Model PD-17) , provided by public sources across the internet.

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