The secret Hypersonic replacement for the legendary SR-71

New details on Lockheed Martin’s successor to the SR-71 Blackbird, the SR-72, that will be twice as fast as its predecessor with a cruising speed of Mach 6, or six times the speed of sound.

Images credit Lockheed Martin

The secret hypersonic replacement for the iconic SR-71 “Blackbird,” a 4,000-mile-per-hour reconnaissance drone, known as the SR-72.

The new hypersonic military drone, will be able to take spy photos and attack targets at speeds of up to Mach 6.

Hypersonic SR-72

The aircraft is now under development by aeronautical engineers at Lockheed Martin and Aerojet Rocket­dyne, in California.

Hypersonic SR-72 -2

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