Lockheed helicopters

Lockheed CL-475 1959 Lockheed started a programme of helicopter research in the mid-1950s. The CL-475 (N6940C) was a ... read more ... The Lockheed Model 186 was designed in response to a 1960 joint Army/Navy requirement for ... read more ... Lockheed XH-51 1962 Lockheed XH-51 Compound 1964 The XH-51A's quite impressive performance significantly improved, however, following the second prototype's 1964 conversion into ... read more ... The Lockheed AH-56 Cheyenne attack helicopter was created in response to the US Army's need ... read more ... Lockheed AH-56A "Cheyenne" 1967