The Defence Advanced Research Projects Agency (DARPA) has issued a formal call for ideas on a new class of hypersonic cruise missile, one designed to penetrate the sophisticated air defence networks that peer adversaries have been steadily expanding. The goal, as the agency frames it, is not incremental improvement but a wholesale leap in what a strike weapon can do.
DARPA's Tactical Technology Office posted the Request for Information (RFI) on August 7, 2026, giving companies until October 6, 2026, to respond. The programme is called the Next Generation Hypersonic Cruise Missile, or NGHCM.
The RFI asks respondents to address three broad areas: advanced air-breathing hypersonic cruise missile architectures, emerging capabilities, and new approaches to testing and evaluation. DARPA says the demonstrator must also be affordable enough to manufacture at scale, not just survivable in a high-threat environment — a constraint that distinguishes it from purely experimental vehicles.
The stated driver is the spread of what the agency calls Integrated Air Defense Systems (IADS). DARPA's RFI warns that peer adversaries' rapidly proliferating IADS threaten to restrict US operational freedom and erode the effectiveness of existing standoff strike weapons — missiles fired from a safe distance before entering defended airspace. A weapon that travels at hypersonic speeds, above Mach 5, and at high altitude would be far harder to intercept than anything currently in service.
The NGHCM would be powered by a scramjet engine. Unlike a conventional rocket, a scramjet carries no onboard oxygen. It compresses the air rushing in from outside and mixes it with hydrocarbon fuel, which makes the system lighter and, in theory, cheaper to build in quantity. The trade-off is that the engine only works at very high speeds, so the missile must first be accelerated to those speeds before the scramjet can sustain flight.
DARPA has been here before, with results that give the NGHCM a credible starting point. The agency's Hypersonic Air-breathing Weapon Concept (HAWC) programme, a joint effort with the US Air Force, completed a third test flight in July 2022. A Raytheon-built vehicle using a Northrop Grumman scramjet engine reached speeds above Mach 5, flew for more than 300 nautical miles, and climbed above 60,000 feet. That test proved the core technology works. The NGHCM is intended to take those results and build something operationally relevant from them.
What the new programme has not yet defined publicly is how much further it intends to push. Specific speed, range, and altitude targets for the NGHCM demonstrator have not been disclosed. Nor has DARPA named a budget, a timeline for moving from demonstrator to a fielded weapon, or whether the programme will eventually become a joint-service effort as HAWC was. Those details may emerge at an in-person industry day DARPA plans to hold in Arlington, Virginia, in September 2026.
The agency has also made an unusual point of welcoming responses from outside the traditional defence contracting community. DARPA explicitly encouraged non-traditional contractors and emerging technology developers to submit ideas, a signal that it is looking beyond the established primes for at least some of what the programme needs.
The NGHCM announcement arrives as the US Air Force separately moves toward production of the Hypersonic Attack Cruise Missile (HACM), with that programme readying for production launch around the same time. The two efforts are at different stages — HACM closer to fielding, NGHCM still seeking its design foundation — but together they illustrate how much the US military is now investing in getting hypersonic weapons out of the laboratory and into operational use.
Whether the NGHCM delivers the revolutionary performance DARPA is promising will depend on what industry proposes, what the agency funds, and how the technology holds up beyond controlled test conditions. For now, the RFI is a question, not an answer.
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