The venerable Chilly Conflict SR-71 Blackbird could also be wanting nervously at its laurels after Hermeus’s newest Quarterhorse Mk 2.1 uncrewed prototype broke the sound barrier at Spaceport America over the White Sands Missile Vary airspace in New Mexico in March 2026.
To at the present time, the Lockheed SR-71 Blackbird holds quite a lot of air information, together with the official world airspeed document for a crewed, air-breathing jet plane when it reached Mach 3.32 in 1976; absolutely the altitude document for sustained horizontal flight; and velocity over a closed 1,000-km (621-mile) course. Added to this, it additionally set time-and-distance information for flights between New York and London; London and Los Angeles; Los Angeles and Washington, DC; Kansas Metropolis and Washington, DC; and St. Louis and Cincinnati.
Not solely might the high-altitude spy aircraft set such information, it might cruise at excessive supersonic speeds as a matter of routine whereas gathering intelligence for the US and NATO, all whereas reportedly outrunning greater than 4,000 anti-aircraft missiles throughout its operational profession.
Quarterhorse 2.1
The Blackbirds had been retired to museums three a long time in the past, however their legacy lives on as each an instance and a problem to trendy aerospace engineers. Although it is uncrewed, Hermeus sees its Quarterhorse undertaking as each the religious and technological successor to the SR-71.
The aim of the undertaking shouldn’t be solely to construct an plane able to surpassing the Blackbird’s information, but additionally to behave as a testbed for crucial applied sciences wanted for routine, sustained hypersonic flight. These embody the corporate’s Chimera turbine-based combined-cycle (TBCC) propulsion system, which integrates a standard turbojet engine with a ramjet to allow transitions from subsonic to hypersonic speeds.
Hermeus’s method is not to construct a single airframe. As an alternative, its engineers have opted for speedy prototyping by constructing a sequence of plane, every designed to deal with a particular section of growth – from taxi exams to takeoff and touchdown, and now supersonic flight – earlier than ultimately taking over the legacy of the SR-71.
Hermeus
The newest flight of the F-16 Combating Falcon-sized Mk 2.1 passed off 364 days after the maiden flight of the Quarthorse Mk 1, reaching a high velocity of Mach 1.21. In line with the corporate, knowledge collected from the present exams can be used to develop the Mk 2.2 and Mk 2.3, transferring towards sustained high-supersonic flight with the uncrewed Darkhorse multi-mission navy plane and, in the end, the Halcyon, a 20-passenger industrial hypersonic transport jet.
“Our prospects on the Division of Conflict are paying shut consideration to how briskly this program is transferring,” mentioned AJ Piplica, CEO and Co-founder of Hermeus. “This flight demonstrates a tempo of execution that’s extraordinarily uncommon in trendy aviation. Our nation’s means to ship new uneven navy functionality at scale is determined by groups that may remedy arduous technical challenges shortly. That’s precisely what we’re proving with every check flight we conduct and every new plane we construct at Hermeus.”
Supply: Hermeus
