The US Air Force and Lockheed Martin performed a flight test of the Mk21A reentry vehicle in the Pacific Ocean on June 17.
The Mk21A is planned to ride atop the Sentinel intercontinental ballistic missile (ICBM). For the test, an unarmed Mk21A reentry vehicle launched aboard a Minotaur I rocket on June 17 from Vandenberg Space Force Base, California. According to a Lockheed Martin press release, the latest flight test “continues Lockheed Martin’s leadership and expertise in developing effective and reliable reentry vehicle technology.” It tested key design elements and technologies for the reentry vehicle. These include an arming and fuzing subsystem as well as support equipment. “Mk21A is the U.S. Air Force’s integrated reentry vehicle and the critical front-end of the service’s future intercontinental ballistic missile (ICBM) weapon system."
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