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Lockheed Martin's Space Division started in the production of missiles and later ICBM's in the 1950s. Their TITAN missile system was used for 12 Gemini spacecraft and the Voyager probes. They have worked largely in collaboration with NASA on many of their probes, landers, and spacecraft, and hope to play a key role in NASA's return to the moon in 2024.
Satellite Data System (SDS) spacecraft are communication relay satellites for transmitting real-time data from US reconnaissance satellites (e.g. KH-11, Onyx, Topaz) in polar areas. They are also used for communications to USAF aircraft on polar routes and connect the various ground stations of the Air Force Satellite Control Network (AFSCN). The spacecraft relay the downlinked data to a ground station at Fort Belvoir, Virginia.
Height 47.54 Meters
Max Stages 3
Mass To GTO 2810 kg
Liftoff Thrust 2479 kN
Diameter 3.04 Meters
Mass To LEO 6580 kg
Liftoff Mass 204 Tonnes
Launch Success 23
Consecutive Success 23
Maiden Flight 1992-06-10
Launch Failures 0