After announcing the SR-72 last week, Lockheed Martin's Skunk Works has followed up with this concept for the High Speed Strike Weapon (HSSW), a "hypersonic missile concept suitable for future bomber and fighter aircraft." Hypersonic means that it'll have a cruising speed of well above Mach 5, which works out to something in excess of 4,000 miles per hour. Besides this concept image, the only other info we have is this:
"The HSSW will enable a responsive strike capability on time-critical, heavily defended targets and achieves high survivability through altitude, speed and stealth."
So basically, it's a SR-71 Blackbird with a nose full of explosives and a death wish.
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