Thor-Delta
The Thor-Delta, also known as Delta DM-19 or just Delta was an early American expendable launch system. The first stage was a Thor missile in the DM-19 configuration. The second stage was the Delta, which had been derived from the earlier Able stage. An Altair solid rocket motor was used as a third stage.
Missions: 12
Successes: 11
Partial Failures: 0
Failures: 1
Success Streak: 11
Success Rate: 91.7%