The hard part is no longer the technology to fly at more than Mach 5: It’s putting together all the parts to build hypersonic missiles in bulk.

  PARIS AIR SHOW: Imagine a swarm of up to 30 hypersonic scramjets the size of cruise missiles, launched from air, land and sea. They share data with each other, correcting their flights, perhaps changing targets midcourse. And they can be manufactured relatively quickly and for much less cost than most of the hypersonic vehicles… Keep reading →