Lockheed Martin release mentions that it has successfully completed acoustic testing of the first geosynchronous orbit (GEO-1) spacecraft in the Space Based Infrared System (SBIRS) program. The U.S. Air Force’s SBIRS program is designed to provide early warning of missile launches, and simultaneously support other missions, including missile defense, technical intelligence and battlespace awareness.

During the test, the fully integrated spacecraft was subjected to the maximum sound and vibration levels expected during launch into orbit. Acoustic and pyroshock testing are among several critical environmental test phases that validate the overall satellite design, quality of workmanship and survivability during space vehicle launching and on-orbit operations.

Thermal vacuum testing of the completed GEO-1 space vehicle, which will validate its performance at temperature extremes greater than those expected during on-orbit operations, is on track for March 2009 in preparation for delivery to the Air Force for a planned launch in fiscal year 2010.

Lockheed Martin is currently under contract to provide two HEO payloads and two GEO satellites, as well as ground-based assets to receive and process the infrared data. Both HEO payloads are on-orbit and performance meets or exceeds specifications.