- Atlas (rocket family)
Atlas is a family of U.S. space
launch vehicle s. The originalAtlas missile was designed in the late 1950s. It was aliquid-fuel rocket burningLOX andRP-1 in three engines configured in an unusual "stage-and-a-half" or "Parallel Staging" design: two of its three engines were jettisoned during ascent, but its fuel tanks and other structural elements were retained. VariousAtlas II models were launched 63 times between 1991 and 2004. There were only 6 launches of theAtlas III , all between 2000 and 2005. TheAtlas V is still in service, with launches planned through 2011.Atlas family evolution
Atlas missile
The first successful test launch of an
SM-65 Atlas missile was onDecember 17 ,1957 . [] Approximately 350 Atlas missiles were built. Many were eventually converted to orbital launch vehicles after they were removed from service as missiles. Missiles converted into Atlas E/F "space boosters" were used to launch the early "Block I"GPS satellite s. [cite web | url = http://www.astronautix.com/lvs/atlase.htm | title = Atlas E | publisher = Encyclopedia Astronautica]Early Atlas rockets were also built specifically for non-military uses. On
December 18 ,1958 , An Atlas was used to launch the "Signal Communication by Orbiting Relay Equipment" (SCORE) satellite, which was, "The first prototype of a communications satellite, and the first test of any satellite for direct practical applications." [] [] Atlas boosters were also used for four mannedProject Mercury missions. OnFebruary 20 ,1962 it launched "Friendship 7," which made three earth orbits carryingJohn Glenn , the first U.S.astronaut to orbit the Earth. Identical Atlas boosters successfully launched three more manned Mercury orbital missions in 1962-63.Beginning in 1960 the Agena upper-stage, powered by
hypergolic fuel , was used extensively on Atlas launch vehicles. TheUnited States Air Force ,NRO andCIA used them to launchSIGINT satellites. [] NASA used them in theRanger program to obtain the first close-up images of the surface of the Moon and forMariner 2 , the first spacecraft to flyby another planet. Each of theAgena target vehicle s used forspace rendezvous missions was launched on an Atlas rocket.Beginning in 1963 the
LH2 -fueled Centaur upper stage was also used on dozens of Atlas launches.NASA launched theSurveyor program lunar lander spacecraft and most of the Mars-boundMariner program spacecraft with Atlas-Centaur launch vehicles.Atlas A
Atlas B
Atlas C
Atlas D
Atlas E
Atlas F
Used to launch the Block I series of
GPS satellite s from1978 to1985 .Launch vehicles
Atlas-Vega
Atlas-Able
SLV-3 Atlas
Atlas-Agena
= Atlas LV-3A/Agena A =
= Atlas LV-3A/Agena B =Used to launch a number of
Missile Defense Alarm System satellites from 1961 to 1963.
= Atlas LV-3A/Agena D =* Used for seven Canyon satellite launches between 1968 and 1977.
= SLV-3 Atlas/Agena B =
= Atlas/Agena D SLV-3A =The Agena D SLV-3A was used to launch a number of
KH-7 reconnaissance satellites from 1963 to 1967 as well as a number ofMissile Defense Alarm System satellites.Atlas-Centaur
Atlas Centaur/LV-3C
Atlas Centaur/SLV-3C
Atlas Centaur SLV-3D
Atlas H
Atlas G
Atlas I
The first flight of an
Atlas I launched theCRRES satellite onJuly 25 ,1990 . [cite web | url = http://www.astronautix.com/lvs/atlasi.htm | title = Atlas I | publisher = Encyclopedia Astronautica]Atlas II
In May 1988, the Air Force chose
General Dynamics (nowLockheed-Martin ) to develop the Atlas II. The first Atlas II launch placed aEutelsat satellite intogeostationary orbit on1991-12-07 .Atlas IIA
Atlas IIAS
Atlas III
Atlas IIIA
The Atlas III was used between 2000 and 2005. Atlas III was the first member of the Atlas family to use "normal" staging. Its first stage used a single
RD-180 engine.Atlas IIIB
Atlas V
The Atlas V is built in
Decatur, Alabama byUnited Launch Alliance , a joint venture of Lockheed Martin andBoeing . The first Atlas V launch was onAugust 21 ,2002 . In late 2009 an Atlas V is scheduled to launch theMars Science Laboratory rover mission.Atlas V Heavy
References
External links
* [http://www.astronautix.com/lvfam/atlas.htm Atlas at Encyclopedia Astronautica]
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