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- Lockheed D-21 - Wikipedia
Development began in October 1962 Originally known by the Lockheed designation Q-12, the drone was intended for reconnaissance deep into enemy airspace
- D21 Enterprises
Built with Volusion
- The Secretive D-21 Drone and Operation Senior Bowl
Even more Top Secret than the Lockheed SR-71, the D-21 drone was a promising Cold War idea that could have eliminated the need for manned overflights, although it was mostly unsuccessful
- Lockheed D-21B - National Museum of the USAF
Developed by the famed Lockheed "Skunk Works” in the 1960s, the D-21 used technology from the A-12 YF-12 SR-71 “Blackbird” family of high-speed manned aircraft Unlike the turbojet engines in the Blackbird, however, the D-21 was powered by a ramjet
- D-21 Mach 3 Spy Drone Summed Up in 4 Words
Key Points and Summary on the D-21 Drone – The Lockheed D-21 was a Mach 3 3, high-altitude reconnaissance drone developed by Skunk Works in the 1960s—a revolutionary concept that was ultimately too far ahead of its time
- Roll A D21 Die
D21 Dice Roller D21 Dice Roller Rolls a D21 die Lets you roll multiple dice like 2 D21s, or 3 D21s Add, remove or set numbers of dice to roll Combine with other types of dice (like D19 and D23) to throw and make a custom dice roll
- D-21 Drone - March Field Air Museum
Capable of speeds of Mach 3 5 the D-21, (initially designated Q-21) used cutting-edge design to reduce its radar cross-section making it virtually invisible to eastern bloc surveillance networks
- D-21: The Nearly Forgotten Mach 3. 2 Drone Built to Spy on China
In 1968, the first D-21 launched successfully from a B-52 bomber As detailed by The Aviation Geek Club, “The drone flew 3,000 miles at 90,000 feet After a few more flight tests, the CIA and
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