The Piasecki Helicopter Corporation (later Vertol Aircraft Corporation) was a designer and manufacturer of helicopters located in Philadelphia Pennsylvania in the late 1940s and throughout the 1950s. The Piasecki Helicopter Corporation was founded in 1940 by Frank Piasecki as the P-V Engineering Forum first becoming known as Piasecki Helicopter in 1946. The PV-2 was the second helicopter flown in the United States and was designed and flown by Frank Piasecki in 1943.
