Hypersonic dual-mode ramjets are not suitable for 'general' applications. What makes them 'dual-mode ramjets' is that a single engine can work at both supersonic and hypersonic speeds. It's still a ramjet and so needs another means to get the engine/vehicle up to supersonic speeds.
As sibsling notes, maybe it could go into SR-72 or similar penetrating ISR platform is a reasonable guess. It might go into some sort of missile carrier (the carrier gets the expensive reusable dual-mode ramjet, so it can launch missiles with cheaper disposable scramjets directly at hypersonic speed?).
As sibsling notes, maybe it could go into SR-72 or similar penetrating ISR platform is a reasonable guess. It might go into some sort of missile carrier (the carrier gets the expensive reusable dual-mode ramjet, so it can launch missiles with cheaper disposable scramjets directly at hypersonic speed?).