Lockheed D-21
Military
Image: Wikimedia Commons
The Lockheed D-21, which first flew in 1964, was an unmanned reconnaissance drone achieving extraordinary 4,104 km/h speed for high-altitude intelligence gathering. Its 13.1-meter length, 5.8-meter wingspan, and single-engine design reflected cutting-edge autonomous aircraft technology.
Specifications
- Role
- High-altitude and high speed reconnaissance drone
- Origin
- United States
- Engines
- 1
- First flight
- 1964
- Length
- 13.1 m
- Wingspan
- 5.8 m
- Max speed
- 4,104 km/h