It’s the same type of antiballistic infrastructure the Pentagon depends on to shoot down intermediate-range North Korean ballistic missiles.
It was the second failure of an SM-3 antiballistic missile interceptor since June.
“We’re now one for three,” a U.S. official with knowledge of the test told Fox News. The official was not authorized to speak to the media, and requested anonymity.
The ship's AN/SPY-1 radar finds the ballistic missile target and the Aegis weapon system calculates a solution on the target. When the missile is ordered to launch, the Aerojet MK 72 solid-fuel rocket booster launches the SM-3 out of the ship's Mark 41 vertical launching system (VLS). The missile then establishes communication with the launching ship. Once the booster burns out, it detaches, and the Aerojet MK 104 solid-fuel dual thrust rocket motor (DTRM) takes over propulsion through the atmosphere. The missile continues to receive mid-course guidance information from the launching ship and is aided by GPS data. The ATK MK 136 solid-fueled third-stage rocket motor (TSRM) fires after the second stage burns out, and it takes the missile above the atmosphere (if needed). The TSRM is pulse fired and provides propulsion for the SM-3 until 30 seconds to intercept.
At that point the third stage separates, and the Lightweight Exo-Atmospheric Projectile (LEAP) kinetic warhead (KW) begins to search for the target using pointing data from the launching ship. The Aerojet throttleable divert and attitude control system (TDACS) allows the kinetic warhead to maneuver in the final phase of the engagement. The KW's sensors identify the target, attempt to identify the most lethal part of the target and steers the KW to that point. If the KW intercepts the target, it provides 130 megajoules (96,000,000 ft·lbf, 31 kg TNT equivalent) of kinetic energy at the point of impact.[9]
Independent studies by some physics experts have raised some significant questions about the missile's success rate in hitting targets.[10][11][12] In a published response, the Defense Department claimed that these findings were invalid, as the analysts used some early launches as their data, when those launches were not significant to the overall program.[13]
It’s the same type of antiballistic infrastructure the Pentagon depends on to shoot down intermediate-range North Korean ballistic missiles.
It was the second failure of an SM-3 antiballistic missile interceptor since June.
“We’re now one for three,” a U.S. official with knowledge of the test told Fox News. The official was not authorized to speak to the media, and requested anonymity.
Anonymous source..
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