Is a Lockheed Martin SR-71 blackbird the fastest jet in world?
No, the fastest jet in the world is the North American X-15, which reached a speed of Mach 6.72 (4,520 mph) on October 3, 1967. The Lockheed Martin SR-71 Blackbird is the second fastest jet, which set a record during a reconnaissance mission at 2,193.13 m.p.h.