Lockheed Martin maintains that an SR-72 concept demonstrator will take to the skies by the mid-2020s, possibly entering service as soon as 2030. However, unanswered questions—and serious design ...

Key Points and Summary – The SR-72 “Darkstar” is the long-rumored hypersonic successor to the legendary SR-71 Blackbird, a secret project from Lockheed Martin’s Skunk Works designed to fly ...

The SR-72 is the planned successor to the SR-71, the iconic Cold War-era reconnaissance plane that shattered world records for the fastest manned airbreathing jet engine aircraft. Initial reports ...

Lockheed Martin's Skunk Works has confirmed that it is developing the SR-72 spy plane. The successor to the SR-71 Blackbird, which was capable of Mach 3.5, the SR-72 will be a hypersonic unmanned ...