
The US Defence Advanced Research Projects Agency (Darpa) will bring contractors together later this month to lay out what it wants from the Next Generation Hypersonic Cruise Missile, with air-breathing propulsion at the heart of the project, according to the agency’s website.
Unlike rocket-powered missiles, air-breathing weapons draw oxygen from the atmosphere instead of carrying all they need on board, freeing up weight for fuel or payload.
Darpa has made clear it is looking for more than an upgrade to existing technology. In an industry request issued last month, the agency called for radically new propulsion, fuels, boosters and systems to cope with the extreme heat of hypersonic flight.
The new missile could come in varied sizes, from weapons carried by tactical aircraft to much larger systems launched from bombers or the ground. Darpa has asked contractors to consider flight tests over distances ranging from about 250 to 2,000 nautical miles (460 to 3,700km).



