Jura The idiot
General
here a quite informative article Could SM-3 Interceptor Take On Intercontinental Ballistic Missiles?
Oct 10, 2017
Oct 10, 2017
As Pentagon adds dollars for missile defense, Raytheon pitches SM-3s as ICBM killers
After a series of North Korean ballistic-missile launches, President Donald Trump in August vowed his administration would boost funding for missile defense by “billions of dollars.”
Already in the midst of a ballistic missile defense review expected to wrap up by year-end, the Pentagon was directed to look at what could be done in the near term. The first results of president’s push are now visible, with Congress approving the transfer of $367 million from other programs to a number of missile defense efforts.
The transfers fund pursuit of a so-called “left-of-launch” capability to defeat mobile missiles while they are still on the ground—whether using a missile fired from a fighter, a ship-launched weapon or an attack by special forces. They also provide funding to start the effort of creating 20 new missile-defense silos at Fort Greely, Alaska, as well as for upgrades to a sea-based X-band radar and additional testing of the SM-3 Block 2A interceptor.
Raytheon has been pitching the latest Block 2A version of its SM-3 air-defense missile, which is being cooperatively developed by the U.S. and Japan to destroy medium- and intermediate-range missiles in space during the midcourse stage of their flight and is to be used against even longer-range missiles.
The enlarged, 21-in.-dia. missile already has the speed, range and altitude performance needed to defeat ICBMs. By design, the optical seeker developed for the SM-3 Block 2A’s enlarged hit-to-kill Kinetic Warhead is also the centerpiece of the Redesigned Kill Vehicle (RKV). By 2022, it will begin replacing legacy kill vehicles on the new Ground-Based Interceptors (GBI) in Alaska.
The RKV is being developed by a -led industry consortium, including and Raytheon. Raytheon says that with a few software tweaks ported across from the RKV, the SM-3 Block 2A could be used against ICBM targets.
“On the RKV program, we’re developing algorithms to improve the performance capability of that sensor. It’s nothing more than software and firmware,” explains Rondell Wilson, Raytheon’s lead engineer for air and missile defense products. “That goes directly back into SM-3 Block 2A, and now you have an ICBM-killer capability.”
The SM-3 Block 2A will be the primary armament of the U.S. Ashore site being activated in Poland next year. Raytheon says similar land-based installations could be set up in Hawaii or on the U.S. East or West Coasts as a redundant second layer of defense against potential missile attacks.
If billions of additional dollars are unlocked for missile defense, Wilson says, the supersized SM-3 Block 2A and lower-altitude Block 1B would provide the greatest capability faster. “We can provide SM-3 Block 2A ashore as an under-layer capability for GBI, thereby maximizing the magazine depth of those high-value GBIs,” he says. “We can do that immediately.”
The SM-3 Block 2A is in testing and has already entered limited production. Raytheon’s principal supplier is Japan’s , which provides the second- and third-stage boosters and nose cone.
The missile has completed two successful flight tests, and it knocked out its first ballistic missile target in February. But the second intercept test, in June, failed, reportedly because a sailor on the USS John Paul Jones pressed the wrong button and the missile self-destructed after launch. “We know it wasn’t the interceptor,” Wilson says.
For threats within the atmosphere, Raytheon is also proposing land-based SM-6 interceptors for the Army. It is the U.S.’s longest-range air defense weapon, typically carried by Aegis-equipped guided-missile destroyers.
Dean Gehr, Raytheon’s director for the Land-Based Standard Missile, says the SM-6 has been demonstrated against aircraft, cruise missiles and even ships. It can also intercept missile warheads as they reenter the atmosphere and after any decoys have burned up.
“You’ve got a lot of capability in the SM-3 and SM-6, so why not bring that capability ashore?” Gehr says. “It already is ashore as part of Aegis Ashore, but bring it into a form factor where we can integrate it with existing Army systems, then you’ve got layered defense.”
Raytheon has proposed different launcher options for SM-6, such as the M1120 HEMTT Load-Handling system used with Lockheed Martin’s Terminal High-Altitude Air Defense () system. Fire control for the Army could be provided by ’s Integrated Air and Missile Defense Battle Command System.
Raytheon also wants the Pentagon to adopt its long-range radar systems, specifically the Thaad system’s X-band TPY-2 and the S-band SPY-6 Air and Missile Defense Radar under development for the Navy.