SUNNYVALE, Calif. - The Lockheed Martin-led team developing the Air Force's Space-Based Infrared System (SBIRS) delivered the remaining major spacecraft bus subsystem for the second geosynchronous orbit spacecraft. The GEO-2 spacecraft core structure and propulsion subsystem was recently completed and the high-performance communications subsystem for the spacecraft was delivered to Sunnyvale in early December. The propulsion subsystem, used to maneuver the satellite during transfer orbit and conducting on-orbit repositioning, was developed at Lockheed Martin's Mississippi Space & Technology Center at Stennis Space Center, Miss. (Source: Lockheed Martin, 12/22/08).
