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] The PV-2 is now on display at the National Air and Space Museum's Steven F. Udvar-Hazy Center Data from History - single rotor helicopters: PV-2[2]General characteristics Performance