The Piasecki HRP Rescuer
"the Harp"

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General Info

Piasecki HRP Rescuer "The Harp"


A U.S. Coast Guard HRP-1G
Role	Tandem-rotor transport/rescue helicopter
Manufacturer	Piasecki Helicopter
Designer	Frank Piasecki
First flight	1945
Introduction	1947
Primary users	United States Navy United States Coast Guard United States Marine Corps
Number built	28
Developed into	Piasecki H-21

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History Piasecki Helicopter Corporation
Piasecki HRP Rescuer "The Harp"

The Piasecki HRP Rescuer (also called Harp) is a United States tandem-rotor transport or rescue helicopter designed by Frank Piasecki and built by Piasecki Helicopter. The Piasecki PV-3 was adopted as the HRP-1 Rescuer by the United States Navy, United States Marine Corps, and United States Coast Guard. An improved PV-17 variant was later produced as the HRP-2. As one of the first transport helicopters in military service, the HRP-1 was capable of carrying two crewmen and 8–10 passengers or 2,000 lb. (907 kg) of cargo. It was first flown in early 1945, entered service in 1947.

Development

The prototype helicopter (designated PV-3 by Piasecki, though commonly known to test personnel as "The Dogship") first flew at Morton, Pennsylvania in March 1945 following a development contract from the United States Navy in February 1944. The "Dogship" was a novel tandem-rotor helicopter with a fixed tricycle landing gear, powered by a 600 hp (447 kW) Pratt & Whitney R-1340-AN-1 engine. To ensure that the rotors did not hit each other, the rear end of the fuselage curved upwards so the rear rotor was higher than the forward rotor. This was based on a Drago Jovanovich patented design. The fuselage was constructed of ordinary mild steel tubing, filled out with wooden ribs, and covered with doped fabric

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Piasecki HRP Rescuer "The Harp"

Piasecki helicopters

Piasecki Helicopter Corporation
Piasecki HRP Rescuer "The Harp"

General characteristics

Crew: 2
Capacity: eight passengers or 2,000 lb. (907kg) cargo or six stretchers
Length: 54 ft 0 in (16.46 m)
Height: 14 ft 10 in (4.52 m)
Empty weight: 5,301 lb (2,404 kg)
Gross weight: 7,225 lb (3,277 kg)

Powerplant

Powerplant: 1 × Pratt & Whitney R-1340-AN-1 radial engine , 600 hp (447 kW)
Main rotor diameter: 2 × 41 ft 0 in (12.50 m)
Main rotor area: 2,640.51 sq ft (245.30 m²)

Specifications

Maximum speed: 169 km/h,
Range: 300 mi (483 km, 260 nmi)
Service ceiling: 8,530 ft (2,600 m))

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Piasecki Helicopter HRP Rescuer "The Harp"

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The Piasecki HRP Rescuer "the Harp"