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Showing results for tags 'atlas 5-551'.
The United Launch Alliance, a 50/50 business relationship by defense contractors Boeing and Lockheed, successfully launched the AFSPC-11 classified communication satellite for the Air Force. The Atlas 5-551 is the most powerful Atlas variant with a sea level thrust off the pad of 2.4 million pounds. The Atlas 5-551 vehicle consists of a 5-meter diameter fairing, five AJ-60A solid-fueled boosters and a single engined Centaur upper stage. http://nasatech.net/ntAFSPC-11_PAGE.html Next up, the launch of NASA's TESS (Transiting Exoplanet Survey Satellite) on a SpaceX Falcon 9 Ful