US Air Force and Northrop Grumman Test LGM-35A Sentinel ICBM
The image above shows a Sentinel ICBM’s second-stage solid rocket motor firing during a vacuum-chamber test. The successful test was carried out on July 20, by U.S. Air Force engineers… Continue reading "US Air Force and Northrop Grumman Test LGM-35A Sentinel ICBM"