112K views · 2.8K reactions | Kelly Johnson of Lockheed Skunk Works speaking about using a slide rule to design the famous supersonic reconnaissance aircraft SR-71 Blackbird. The kind of computers we have today to perform aerodynamic, structural and performance analyses didn’t exist back then! | Military Update | Facebook

The Blackbird's Secret Partner: Kelly Johnson's D-21 Spy Drone | Rare Restored Footage FULL VIDEO: https://youtu.be/vwv6BiaUtDU Explore Skunk Works' declassified D-21 drone program in this restored documentary, featuring the story of legendary engineer Kelly Johnson, the A-12/M-21 Blackbird mothership, and the secrets of Area 51. This historical film, narrated from the perspective of Kelly Johnson himself, unveils one of the most ambitious and dangerous projects of the Cold War.#aviation #KellyJ

The Blackbird’s Secret Partner: Kelly Johnson’s D-21 Spy Drone | Rare Restored Footage FULL VIDEO: https://youtu.be/vwv6BiaUtDU Explore Skunk Works’ declassified D-21 drone program in this restored documentary, featuring the story of legendary engineer Kelly Johnson, the A-12/M-21 Blackbird mothership, and the secrets of Area 51. This historical film, narrated from the perspective of Kelly Johnson himself, unveils one of the most ambitious and dangerous projects of the Cold War. #aviation #Kelly