US Navy Tests SM-6 AAW Missile at White Sands Missile Range

The Navy’s Standard Missile is, as the bland name says, the Navy’s standard missile to defend the fleet against incoming strikes by enemy aircraft and anti-ship missiles. (Attacking enemy ships and ground targets is done by other missiles altogether). In recent years, though, the Raytheon-made missile has branched out. The standard Standard, the SM-2, is a straightforward fleet-defense weapon, with some capability to intercept targets over the land and even hit enemy ships. But the military is developing a long-range, high-altitude SM-3 variant to intercept ballistic missiles as they coast through space.

Then there’s the SM-6, first issued to the fleet last fall. “It’s the latest evolution of the Standard Missile family,” said Navy Cdr. Sidney Hodgson, the deputy program manager for the Standard series. (SM-4 and SM-5 never saw service). “It doesn’t replace the SM-2,” which will stay in service alongside the SM-6, he emphasized, but “it gives you increased firepower, it gives you extended range.”

To save costs, the Standard Missile Six is an unholy hybrid of the long-range rocket motor from the SM-3, the agile aerodynamic body of the SM-2, and the nose of an AMRAAM air-to-air missile, normally carried by fighter planes. It’s the borrowed AMRAAM components in particular that let the SM-6 pick out tricky targets like a cruise missile maneuvering at low altitude and low speed over land. Even in the desert, the land is never as smooth and flat as the sea, so a low-flying target can hide itself amidst the “ground clutter” of natural features — hills, rocks, buildings — that also show up on radar.

“What we were attempting to show was, [given] something that was subsonic, very low, could we discriminate and engage it?” said Raytheon’s senior program director for SM-6, Mike Campisi. “It was wonderful to see.”

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