Tag Archives: IIR-20-launch

United Launch Alliance Successfully Launches 47th Air Force GPS Mission

A United Launch Alliance Delta II rocket successfully launched the Air Force’s Global Positioning Satellite IIR-20(M) into orbit from Space Launch Complex 17A at 4:34 a.m., EDT. This was the 47th successful GPS launch for the Delta II in its storied 20-year history. The very first Delta II launch on Feb. 14, 1989 was the NAVSTAR II-1 launch. NAVSTAR is now commonly known as GPS.

Continue reading…