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 ...

It stands to reason that the next jet in the series would be assigned the designation SR-72, and as it happens, there is such an aircraft in development. Unfortunately, it's not what you see in ...

While the name of Lockheed Martin’s experimental SR-72 is the Darkstar in “Top Gun ... use the same exotic JP-7 fuel that powered the plane’s predecessor.

What You Need to Know: The SR-72, developed by Lockheed Martin’s Skunk Works, is a proposed hypersonic reconnaissance aircraft aimed to fill critical intelligence gaps in the U.S. Air Force.