The Delta 3000 series was an American expendable launch system which was used to conduct 35 orbital launches between 1975 and 1989. It was a member of the Delta family of rockets. Several variants existed, which were differentiated by a four digit numerical code.
The first stage was the RS-27 powered Extended Long Tank Thor, first flown on the 2000-series. Three or nine Castor-4 solid rocket boosters were attached to increase thrust at lift-off, replacing the less powerful Castor-2 boosters used on earlier models. Two second stages were available; the Delta-P, which had been flown on the Delta 1000 and 2000 series, or the Delta-K, an uprated version with the Aerojet engine. Some launches used a three-stage configuration in order to reach higher orbits. A Star-37D, Star-37E, or Star-48B PAM-D could be used as an upper stage. Launches with PAM-D upper stages were designated Delta 3XX0 PAM-D, rather than assigning a code to the upper stage for use in the four-digit sequence. From the 4000-series onwards, the PAM-D received the upper stage code "5", however this was not applied retrospectively to 3000-series rockets, which were still in service at the time.
It got to resembling a vaudeville show, the show of shows, such comedy =
unserpassed as juvenile theatrics go, but who am I to tell you to =
contain yourself? And who are you to tell me to control it? When we both =
have prepared so carefully. One day you'll know we never meant eachother =
harm in any way, one day you'll know we never meant eachother sorrow, =
gotta keep my distance. I keep sifting through the loot to find the =
stairs, this business burning to the ground, I can't look back my =
hindsight seems to be impared, my outlook has no holds to see out. It's =
starting to hurt when I open my arms too wide, a milky white haze =
invades my vision, my lungs are heavy with your presence as if you were =
standing right behind me, and I can't bring myself to turn around, gotta =
keep my distance.