The U.S. Air Force’s newest protected satellite communications spacecraft will likely reach operational status 7-8 months later than planned, after a liquid apogee engine designed for orbit raising was deemed useless after two failed burn attempts. The first Lockheed Martin-built Advanced Extremely High Frequency (AEHF) satellite was expected to reach its testing position at 90 deg. West in geosynchronous orbit in November, about three months after the Aug. 14 launch date, says Dave ...


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