|
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 ... |
| 
