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 ...

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 ...

Sleek, black and evil in appearance, the SR-71 Blackbird was THE masterpiece of Cold War engineering. Flying faster and higher than any fighter, this stealthy reconnaissance aircraft could snoop where ...