Burner (rocket Stage)
The Burner and Burner 2 rocket stages have been used as upper stages of launch vehicles such as the Thor-Burner and Delta since 1965. The currently available Burner 2 is powered by a Star 37 solid rocket motor. Thor Altair and Thor Burner were mainly used for US military meteorological programs (DMSP), although they also launched technological satellites.
In addition to use on Delta family rockets, Burner 2 stages have been used on both Atlas and Titan rockets.
Read more about Burner (rocket Stage): Burner 1, Burner 2 or Burner II