Helicopters built by Piasecki, Vertol, Boeing-Vertol

Boeing Model 401 1943 Small two-seat helicopter designed in 1943 as either an open cockpit or enclosed cabin model.DAT ... read more ... He is Frank N. Piasecki, President of the PV-Engineering Forum, an organization he formed with ... read more ... Piasecki PV-2 1943 Piasecki PV-3, HRP-1 1945 Although it was built only in modest numbers and had an unspectacular (though useful) service ... read more ... This tandem-rotor design was evolved by Piasecki Helicopter Corporation to meet a Bureau of Aeronautics ... read more ... Piasecki HUP "Retriever" 1949 Piasecki PV-17 / HRP-2 1949 The much-improved HRP-2 (PD-17) featured a streamlined metal fuselage offering better visibility for two pilots ... read more ... From the all-metal PV-17 built in 1948, the following year Piasecki derived the HRP-2 Rescuer ... read more ... Piasecki H-21 1952 Piasecki PV-15, YH-16 "Transporter" 1953 In 1953 the enormous XH-16 turboshaft tactical transport helicopter, the Transporter, was built. It had ... read more ... In 1956, the Vertol Aircraft Corporation began developing a turbine-powered member of the "flying banana" ... read more ... Boeing-Vertol CH-46 1958 Boeing-Vertol CH-47 "Chinook" 1961 In September 1958, the US Army commissioned Boeing Vertol to develop a medium transport helicopter ... read more ... In late 1965, the first Armed/Armoured Chinook was officially rolled out and testing was begun ... read more ... Boeing-Vertol ACH-47 "Armed/Armoured Chinook" 1965 Boeing-Vertol Model 227 1967 - project Model 227project ... read more ... Model 237project ... read more ... Boeing-Vertol Model 237 1967 - project Boeing-Vertol Model 297 project Model 297project ... read more ... Experimental advanced-technology helicopter withstretched CH-47A fuselage, four-blade rotors, taller aft pylon, retractable u/c and lift ... read more ... Boeing-Vertol 347 1970 Boeing-Vertol AAH 1973 - project Boeing-Vertol's proposal for U.S.Army Advanced Attack Helicopter competition. Only mockup was built ... read more ... Competitor in the UTTAS programme to choose a utility helicopter for the US Army (won ... read more ... Boeing-Vertol Model 179 (YUH-61) 1974 Boeing-Vertol Model 301 / XCH-62 1975 - project This big "flying crane" built for the US Army's HLH (Heavy Lift Helicopter) specification, was ... read more ... After having developed an updatedversion of the CH-47 "Chinook" in1976, designated the CH-47D, whichincorporated improvements ... read more ... Boeing-Vertol Model 234 1980 Boeing-Vertol V-360 1987 First flown in 1987 the Model 360 is a privately developed advanced technology rotorcraft, designed ... read more ... The Comanche was intended to replace the US Army's relativelyunsophisticated OH-58D Kiowa Warrior and read more ... Boeing/Sikorsky RAH-66 "Comanche" 1996 Boeing X-50 Dragonfly 2003 The X-50A Canard Rotor/Wing (CR/W) began as a McDonnell Douglas Helicopters project for a VTOL ... read more ...