Piasecki PV-2

The Piasecki PV-2 is a helicopter designed by Frank Piasecki. The PV-2 is best known for being one of the first successful helicopters flown in the United States. The PV-2 first flew on April 11, 1943.^[1] Developed as a technology demonstrator, the PV-2 brought several new features such as the first dynamically balanced rotor blades, a rigid tail rotor with a tension-torsion pitch change system, and a full cyclic and collective rotor pitch control.^[2]

PV-2
PV-2 in flight testing
Role	Helicopter
Manufacturer	P-V Engineering Forum
Designer	Frank Piasecki
First flight	April 11, 1943
Produced	1943
Number built	1

The PV-2 is now on display at the National Air and Space Museum's Steven F. Udvar-Hazy Center

Specifications

Data from History - single rotor helicopters: PV-2^[2]

General characteristics

• Crew: 1
• Capacity: 2
• Length: 21 ft 6 in (6.55 m) fuselage
• Max takeoff weight: 1,000 lb (454 kg)
• Powerplant: 1 × Franklin 4AC-199 4-cylinder horizontally-opposed piston engine, 90 hp (67 kW) at 2,500 rpm^[3]
• Main rotor diameter: 24 ft 11 in (7.6 m)
• Main rotor area: 488.4 sq ft (45.37 m²)
  
• Blade section: NACA 0012^[4]

Performance

• Maximum speed: 100 mph (160 km/h, 87 kn)
• Range: 150 mi (240 km, 130 nmi)