The United Launch Alliance detected an unanticipated "data signature" on one of the engines that powered the launch of the Air Force's newest Global Positioning System satellite last week, an issue that caused the rocket's upper-stage engine to provide lower thrust than expected. The Air Force's Boeing-produced GPS IIF-3 satellite was launched from Cape Canaveral Air Force Station, FL, on Oct. 4 aboard a Delta IV rocket booster. Raising that satellite to its proper orbit took longer than planned, although...
