The SR-71 was developed as a black project from the Lockheed A-12 reconnaissance aircraft during the 1960s by Lockheed's Skunk Works division. American aerospace engineer Clarence "Kelly" Johnson was responsible for many of the aircraft's innovative concepts. The shape of the SR-71 was based on that of the A-12, which was one of the first aircraft to be designed with a reduced radar cross-section. At one point, a bomber variant of the aircraft was under consideration, before the program was focused solely on reconnaissance. SR-71 Blackbird: America's Old Super Spyplane Is Still the World's Fastest Jet Other videos you might like: This is America's E-6 Mercury ► https://youtu.be/ZZRH-k4TUuQ Why America's Enemies Feared the P-47 ► https://youtu.be/bYssexVvggA America's Crazy Flying Aircraft Carrier ► https://youtu.be/EgbgIOThb4E SUBSCRIBE TO US ► https://www.youtube.com/c/USMilitaryNewsMNsub_confirmation=1 Thank You