The SR-71 is one of the U.S. Air Force's most prolific aircraft. Other than looking like a futuristic aircraft military model lovers have built for decades, it was designed and built in secret by the ...

Key Points and Summary - The SR-71 Blackbird, the world's fastest air-breathing manned aircraft, held its speed record not because of its airframe's limits, but due to a crucial safety restriction on ...

The company, that also shared plans for the next Mk 2 aircraft powered by the Pratt & Whitney F100 engine, aims for the final Quarterhorse Mk 3 to break the SR-71 flight speed record. Hermeus, a US ...

How fast? Test pilot Jim Eastham managed to push one to Mach 3.56, or just under 2,400 mph, for approximately 15 seconds whilst in a dive, as noted by retired U.S. Air Force Master Sergeant Jim ...

Move Over SR-71 Blackbird – The Hermeus Quarterhorse is Gunning For Your Speed Record – Fanboys of the Lockheed SR-71 “Blackbird” are very quick to note that even after more than four decades the high ...