Aurora” has signified a rumored SR-71 successor: a stealthy, manned, hypersonic reconnaissance jet said to cruise above Mach 5 or Mach 6 and 100,000 feet. -The tale leans on a cryptic 1985 budget line ...

The SR-91 Aurora, a reported successor to the SR-71 Blackbird spy aircraft, is conjecture with little proof of its existence. Though there was a rumor based on a budget code name and one supposed ...

GE Aerospace recently successfully demonstrated two different rotating detonation combustion (RDC) engines—a missile-scale ramjet and a dual-mode ramjet for high-speed aircraft. The company in a Sept.