Lockheed XV-4 Hummingbird
| XV-4 Hummingbird | |
|---|---|
|   First prototype XV-4 Hummingbird  | |
| General information | |
| Type | VTOL | 
| National origin | United States | 
| Manufacturer | Lockheed | 
| Status | Both aircraft destroyed during testing | 
| Primary user | United States Army | 
| Number built | 2 | 
| History | |
| First flight | 7 July 1962 | 
The Lockheed XV-4 Hummingbird (originally designated VZ-10) was a U.S. Army project to demonstrate the feasibility of using VTOL for a surveillance aircraft carrying target-acquisition and sensory equipment. It was designed and built by the Lockheed Corporation in the 1960s, one of many attempts to produce a V/STOL vertical take off/landing jet. Both prototype aircraft were destroyed in accidents.