Especially at the start of her service, in the late 1960s. The SR-71 could fly at Mach 3.2 (around 2,100 miles per hour). So, Blackbird was not hypersonic as its anticipated successor, the SR-72, is ...

The Lockheed Martin SR-71 “Blackbird” still holds the world ... Although the mission to develop an even faster successor to the U-2 was already in the works prior to this incident, the loss ...

In 2013, Lockheed Martin announced development of the the successor to the SR-71 Blackbird spy plane. The SR-71 was capable of reaching speeds over three times the speed of sound, and the SR-72 is ...

In 2013, Lockheed Martin announced development of the successor to the SR-71 Blackbird spy plane. The SR-71 was capable of reaching speeds over three times the speed of sound, and the SR-72 is ...

A Russian pilot claimed he was able to lock his missiles onto an SR-71 during one incident ... made it's first flight in 1975 and was the MiG-25s successor.

Although the mission to develop an even faster successor to the U-2 was already ... Unsurprisingly, the SR-71’s design was heavily influenced by Skunk Work’s Kelly Johnson.