Piasecki Helicopter Corporation designed and manufactured helicopters in Philadelphia and nearby Morton, Pennsylvania, in the late 1940s and the 1950s. Its founder, Frank Piasecki, was ousted in 1956 and started a new company, Piasecki Aircraft. Piasecki Helicopter was renamed Vertol Corporation in early 1956.: 257–8 Vertol was acquired by Boeing in 1960 and renamed Boeing Vertol. The Piasecki Helicopter Corporation was founded in 1940 by Frank Piasecki and fellow aeronautics student Harold Venzie as the P-V Engineering Forum (shortened from Piasecki-Venzie); the other partners were F.J. Kosloski, Donald N. Meyers, Elliott Daland, and Walter Swartz. The first design from P-V Engineering was the PV-1, a rotorless-tail design that used a tapering tail cone and pressurized air to suppress main rotor torque. Venzie left the firm in 1943.: 143 More information...
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